Previous Reddit controversies have mostly been about Reddit banning abhorrent content. This lead to clones which were, more or less from the start, just full of the worst people you can imagine. This limited their general attractiveness; normal people probably won’t want to use a Reddit clone which is populated mostly by Nazis, or by people who are creepily fixated on moaning about fat people, or by the upskirt people, or what have you.
This would potentially be rather different, in that the group being driven away is more _normal_.