there were 3-4ish communities on that other site that i was pretty active in that are ghost towns here and there is a zero to none chance that they will migrate over. i still go over there for those communities.
that said, for the mindless amusement/newsanddoom scroll lemmy is fine and i do find myself more active here in the general community. it’s just those niche communities haven’t hit the numbers they need to be self-sustaining.