It's not necessarily a bad thing, but especially with the amount of news users (and subs) migrating from Reddit there is a certain potential for chaos for sure.
However, for me the pros of this approach still outweigh the cons as, like you said, it also provides more choice with which community you want to interact.
Like chess, but are a bit tired of googling en passant? Just find a community, that is more focused on the game on a different instance.