There is an important distinction that we must make. Community vs application.
My experience is like yours, made an account on lemmy, beehaw and here. When we saw the Reddit writing on the wall. The community here has been so much fun interacting with, that I have mostly stayed here.
The software is in its infancy and that is exciting. Tricky and maybe a little unstable, but conceptually exactly what I have wanted for ages. It will get there eventually. Ernest and team has been doing a spectacular job keeping the loghts on.
I expect that we will get many different aggregators for federated content as the platform matures.