Fair, I never went on those subs and I'd imagine most Redditors didn't. I'd also imagine there are some Lemmy instances which are just as bad if not worse. I guess that's a bit different because federation means those communities are isolated from other instances, but I don't know if practically it's any different when it's so easy to have accounts across multiple instances. I'd imagine anyone using one of those highly isolated instances on Lemmy will have an account on another instance.