Not yet - there isn't a suitable replacement yet. But this would've been the perfect time for a Reddit alternative.

I think this will actually not change much for the users themselves. They'll continue using Reddit as normal, and move on. Mod teams will be shuffled, and some of the people using third-party apps (like myself) will just... not use Reddit as much (or at all).

I also don't know how a multi-hundred-million-user platform can be justified as already "dead". It might be dead in some elitist sense, as in "oh, all the smart people like me aren't using it anymore", but...