I had the same opinion about Lemmy until I took the time to find the same wide assortment of communities that I subbed to on Reddit. Now that there’s a wider variety of content to read, I don’t have that “please stop talking about the fediverse” thought anymore. I will say that tech and tech-adjacent communities on here are still really heavy on the meta discussions (i.e. as in posting on Lemmy about Lemmy—not about Zuck’s website).
I’m curious if anyone else is able to provide an example here. Personally, I grew up in an extremely right-wing, very isolated, very culty version of the southern baptist church. I was around young-earthers, anti-vaxxers, anti-evolution folks, dinosaur/man co-existence, believing black people are black because they’re cursed—all sorts of crazy whackadoodle shit. I never once met someone who didn’t believe in space. I think you’re right that this was a YouTube Fact™ that she picked up somewhere.