in all seriousness it’s a lot easier to tell on most lemmy instances than reddit because the content hasn’t devolved into formulaic circlejerks. ai language modeling is good at mimicking speech patterns, but can’t come up with novel and accurate ideas in the way that people can.
I think it’s very likely that profit-driven social media sites use fake accounts to boost their stats to advertisers and the like. Throw in corporations using fake accounts to sell shit as well as govt agencies using fake accounts to push their narratives, and the mainstream internet seems like a much more lonely place.