Thread of things people criticize #DND5E for not having rules for that’s actually in the rules:

(1) Variable success/failure on ability checks. DMG p. 242

(2) Rules for social interactions:

DMG p. 244

“The default setting for D&D is Forgotten Realms. I don’t like Forgotten Realms.”

(3) Rules for designing your own setting

DMG p. 25

“D&D is just a hack & slash game at its core. Play other games to do other things.”

(4) Guidelines for playing in other styles

DMG p. 34

“D&D doesn’t do exploration well.”

(5) Rules and guidelines for exploration

DMG pp. 106-112

“D&D doesn’t provide enough guidelines for inspiration, so I <insert house rule>.”

(6) Guidance for how to use inspiration

DMG pp. 240-241

“I prefer grittier games. D&D is too high fantasy for my tastes.”

(7) Rules for grittier games

DMG p. 266

I wouldn’t claim that the game does these things better than other games; that’s for others to argue. But the argument time and again is that #dnd5e does not do <thing>, to which I reply -

Friend. Read your DMG.