Finding “the right community” is definitely an issue, and I’m sure will continue to be one for a while. But remember Reddit had the same issue, with multiple redundant subreddits when one would have been better.
I’m sure things will consolidate over time, with less popular communities going quiet and their subscribers moving to more active ones.
It’s true, but I guess it’s the price of federation. And Reddit having a single namespace meant a lot of subreddits needed to have “real” or “true” prefixed to their names, which was pretty confusing.