There wasn't really anything wrong with how they choose to operate their society, but I never really felt anyone had issue with that. People take issue with the idea that the ancients should be restored/saved(because apparently people think it should've happened). I don't know what people expected there though. Time travel in plots is always really messy and the way the plotline had set things up so far gave us no wiggle room.

What happened to the ancients was awful though and there's absolutely no reason to hate them. You are a bit cruel if you genuinely want to go along with the ascian plan of restoring the ancients though and I see many, many people who comment on how they would gladly take that path if they could.