This whole lemmy tankie dev thing has been discussed ad nauseam here for the past year or so. Not sure what solutions you suggest, but if I were to filter my software by who's an asshole dev and who's not, that list will end up really short.
As far as the ml instance goes, I don't agree that we should start defederating left and right with any and all undesirables, but to each their own. At least people now will be in the know, and it might take some weight off lemmy.world