I think it already has begun to erode it, and people who have noticed it are starting to retreat to dark social like instant messaging apps and group chats, but how far that niche grows I don't know.
I can't stand AI content, if I read something or see a video and it gives me AI fluff vibes, my brain immediately rejects it, but I am sure some of it still makes it through the filter.
I've seen some of my friends and family sharing and consuming AI content and they don't even recoginse it, they're so used to instant answers from google search, reading only headlines and having content that drives confirmation bias, sometimes it freaks me out, like where does this go? How does the AI continue to feed narratives humans want even if its bs, whats the end game?