The problem is that these platforms aren't satisfied merely providing a third place within which we can find and build communities, speak with and learn from others with similar interests, and otherwise, be human. Instead we each become a hamster locked in our own little cage, and the principle reason we're there is to sit on our wheel and run, and while we run we're shown a handful of things from people we actually want to hear from and see, and interspersed with those few things are a ton advertisements for products we don't want and aren't interested in, a few we might be, AI generated nonsense that prompts us to engage with the platform to bump metrics up, the dipshit of the day who's said something infuriating that makes us click into the comments and make sure they're getting dunked on (and possibly join!) appropriately that the social media site dug up from obscurity and is now parading to the entire world, and of course, the same posts again.
Genuinely, the way people talk about going back in time to kill baby Hitler, if I had a time machine, I would spend the rest of my days sabotaging whatever countless number of people invented or would invent the Curated Fucking Timeline, on however many platforms it was invented, by however many data scientists. I would argue it is the single most destructive thing Silicon Valley has ever turned out.