Took me some digging to find the writing thread you're all mad about and I'm going to list all of the points on it I agree with:
7)
10)
11), 12) and 13) are reasonable as written but the part about how the actual age of consent doesn't count because it's still creepy is weird

I don't think any kind of writing a sad/stereotypical/dodgy story makes anyone a turd inherently, but it can make the writing bad. "Forcing a woman to kiss her abuser" is not actually about real women or real abusers, it's about Catradora

25) and 26) are both tedious things people do but not instantly damning. People can sometimes be good writers, or trying to make porn

27)
28)
29) is not entirely true (especially the point about dunking on anime which reveals she only watches very bad anime) but is a good observation for how you make the high-stakes saving the world stuff make sense, in those kinds of stories
42) is either true or TERF, unsure

47)
48), don't believe it's "inherently anti-Semitic", it can be unfortunately be anti-Black as well and at minimum is always Tolkien Racism
49) is a legitimately good point, though advice I have seen used to yell at e.g. gay men making autobiographical work about the AIDS crisis

the idea that a creator has the responsibility to say "except the paedophiles and fascists" every time they make a kindly statement about how everyone's interpretation is valid or they are personally responsible for the actions of the paedos and fascists is especially funny

64)
Extreme disagreement with the unintentional indication that handling breasts would reveal that they are already resistant to attacks but the point as intended is acceptable. Boob armour often looks cool though
73)
76)
79)
80) is true but uncommon out of hardcore dweebs

The Rocky Horror one is yelling "no! Stop! The thing you like ironically is DANGEROUS!!" at a bunch of people who already know the movie/show is offensive and have made it into their own thing for reasons simultaneously too subtle and obvious for a dreary scold to understand

Then it goes full TERF for a bit. Then a normal opinion like 85). Then three of the most bewildering scorchers on the list

89) is extremely true
90)
93) is fine but utterly paradoxical compared to her attitude on fanservice, sexuality, or emotional complexity, and the general theme in the list of wanting stories to be about lovely friends falling in love and then hanging out nicely for 3 seasons

Please think about real people for a while, non-online people, not TV

Then why are you constantly saying "always do the thing I like, never do this or you are disgusting"

100)

Anyway my review of the list is that I, too, used to live on <lj-comm="fanficrants">. When I was 15. Most of the reason I deleted my LJ was because I was so mortified by the idea of anyone ever seeing my posts there

Transformative Fandom is great, but most of the works in it come from people whose relationship with the characters is, or has become, parasocial, rather than actually enjoying a story, the themes of the work and so on. Hence slow burn/SoL - it's hanging out with your friends!

I don't think the pro-ship/anti divide is really a thing, on a strict level - few people in fandom think people's content doesn't reveal anything about their character, and the assholes and trolls in either camp are not representative of the real sentiment

The real way of understanding the split are people who view the characters as friends and parts of themselves, who tend to have literal interpretations, and people who view the characters as ideas and storytelling tools, who tend to have metaphorical interpretations

The literalists skew anti and the metaphorists skew proship, but in practice that isn't true because the legit assholes and creeps in proship often fight back by just talking about their version of the characters who are their friends

And using the characters as your friends is not inherently bad. It is soothing and happy. It is healthy if you do it with understanding that that is what you are doing, and can help you figure out who you are. It protects the vulnerable. I was like that too when I was a teenager.

But as anyone who has ever been in a multifandom RP as an adult can tell you, it is so... boring. You just take up the perspective of one of these characters and just TALK to people, not actually doing anything or making meaningful choices, lost in a parallel head

I mean, this is why this debate rages on and why both opinions are irreconcilable - why the literalist side skews more vulnerable, more strongly neurodivergent, and the metaphorist side older, more professional. Both groups come to fiction for entirely different things

Each group can only comprehend the other group through their own lens, so from their perspective the other side is saying something utterly absurd. To literalists, metaphorists are warped and obsessed with exploitative misery, and to metaphorists the literalists are boring

But because the split isn't easy to define both sides use some of the same rhetorical points, but in different directions.

e.g. The complaint about certain shows being "misery porn" isn't an uncommon observation on the metaphorist side too, but WHAT is identified as miserable is different - metaphorists find the work's perspective, as a whole, bleak, while literalists hate the torturing of characters

This is what the Annoying Writing Tips List is coming from - a perspective of someone who has internalised a lot of metaphorist rhetoric (e.g. the "writing advice") but whose actual desired emotional experience with fiction is as a sort of queer D&D night, inserted IN the work

That's why it's so funny - it's making points based on one whole mode with the language of the other mode. The OP believes she is a serious writer who understands how the stories she likes work or don't, but it's phlogiston - really she just engages in art in an uncommercial way

There always was this kind of engagement - but literalist nerd fiction is primarily a folk phenomenon, which is why it exploded when people got online. It is a marginalised way of enjoying work, bc for most people it's not necessary

So all in all it is a very nerdy list, but it's very typical. Possibly even harmless, since nobody outside of her literalist camp would take it seriously. Yeah you could say it trains bad writing habits, but only for the same reasons that fanfiction already does