I don't know, I feel like llms are the even worse replacement for social networks and maximized ad impressions. Now you don't even need a network or users to produce the addictive content and inject narrative that is so impactful on our brains and lives
I have more meaningful intellectual conversations with LLMs in a given day than in a month on social networks. And the LLMs never try to make me feel angry or stupid, they never ignore my arguments to go on their own soapbox, they almost never feed me misinformation (and never deliberately), and they've yet to tell me to my face that the purpose of their interactions with other people is not to convince or even communicate with those people but to perform for an audience (often one that doesn't feasibly exist).
Some caveats here: my view of social media is biased by the fact that jerks tend to pull me out of the woodwork- I get ragebaited, although I think I avoid the literal bait- so many of my interactions are with jerks. Looking around, I expect I'm not alone, but this may not be the default experience. And the LLMs certainly aren't perfect. They can hallucinate, they're often sycophantic, they're bad at judgment in a number of ways, probably others I'm missing.
Compared to actual people, they suck. Compared to social media as it exists today, they have orders of magnitude to fall before your comparison makes sense to me. And, at least for now, the LLMs are the ones getting better while the social networks are- AFAICT, universally- getting worse.