"Well I'm a leftist and I haven't been banned on social media."

That's because you're politically impotent, you fucking tool. Unless this is just a hobby for you, at some point you should plan on becoming a threat to the oligarchs and warmongers. What do you think happens then?

Do you really think if the left actually becomes a threat to the status quo the Neera Tandens and Rachel Maddows aren't going to suddenly discover a reason why you're dangerous and need to be censored? The only way to be fine with censorship is to plan on never challenging power.

Tech billionaires are not on your side, and neither are the government agencies and plutocratic media leaning on them to implement censorship. Those institutions don't give a shit about silencing the right, they want to implement measures to silence you when the time comes.