That thread is exactly why I've been avoiding the fediverse until beehaw and lemmy in general showed up. It's filled to the brim with nazis, alt right 'statistics' and, you guessed it, slurs. I would've appreciated a warning...
It's less than it's badly moderated, than they have not defederated the instances everybody else in Fedi has already walled off, along with the individuals therein
More importantly, the whole concept of FOSS software is inherently political the same way that top-down, for-profit software is political. It aligns heavily with collectivist, socialist values, which makes it extremely frustrating to me that politically active leftists are often rightfully repulsed by the nasty bigotry and paranoia FOSS software seems to draw in. So many people who would otherwise champion FOSS software as a moral good reject it.