Tankie takeover? I always thought that the whole point of the anarchy instance was to try to pick up all people Russian-Chinese propaganda disguised under communist rhetoric couldn't. It's basically a charismatic facewash that falls back to the last wildcard of just trying to generically shit on governments because "they work against the people - but also, let's create all the systems governments represent while just applying the stroke of its for the people somewhere". In other words, it's the communist mantra except rather than identifying itself as communism it just focuses on identifying governments bad while trying to promote governance but with some mental gymnastic spin.
Not sure the whole lemmy-derived fediverse hasn't been irrevocably tainted by these cult-forming/alt-bot factory communities. You can find instances that defederate from these, the problem is you immediately get a dissected part of the community because they are the baseline founding communities and the resulting conversations have discourse hidden from you that they don't and can freely attempt to manipulate.