German it magazine iX has an interview with the mods of r/de. I don't know if this was mentioned here before...
Short summary: the mods of the large German communities see a huge issue with reddit not recognizing content creators and mods work and there seems to be growing support for an ongoing blackout or so they say.
I think it's a lot less nefarious. About every post or article about Lemmy that links to Lemmy instances has links to (in this order in almost every article I remember) lemmy.world, lemmy.ml and beehaw.org. Of these 3 only lemmy.world accepts new users without vetting. Lemmy.ml doesn't accept new users at all and beehaw doesn't really look that welcoming to someone who knows they might stir some shit up in the future and also getting into beehaw requires more effort. So with lemmy.world usually being the first on the list and additionally requires the least effort to join, this is where all the world and their uncle end up on. They just get the biggest unfiltered influx and with that the biggest amount of toxic people. (I want to make sure that I'm not calling lemmy.world users lazy or toxic or anything like or that this is their target audience. It's just a fact fact that someone who can't be bothered to do research and/or "write an essay" as someone called it, will most likely end up on lemmy.world)