That example is an obvious exception.
Most subs are hobbyist or the like and far too often I see 'locked because ya'll can't behave' in the last few years. There's an upvote/downvote system for a reason; not everything needs to be babied and pruned to what the mods want. Might be one of the few good things about the removal of API because they can't mass delete comments anymore, killing the actual discussion.
It's hard knowing that your favourite small subs are a ticking time bomb; once they get too large they tend to be too strictly controlled and the content quality drops.