I heard of kbin too and on paper, it looks like a viable alternative. But as you’ve said, Lemmy is (as of now) more robust, and getting Reddit users to switch to something even less mature seems like a hard sell. With the Reddit blackout coming soon, Lemmy is just in the prime position to grab all the refugees, most of which will probably never find out about the main devs.
I would generally agree, but tolerance should not extend to the point of accepting genocide denial and defense of clear-cut authoritarianism. See here for the general concept.
Tankies make the (imo) correct assumption that the US (or the west in general) engages in imperialism and is responsible for a huge amount of problems in the world, in addition to general atrocities, but then somehow decide the everything and everyone that opposes the US is perfectly fine and does no wrong. It’s baffeling.