Yeah, thats what we call a trade off. The large userbases are on the bad platforms and the good platforms have small userbases.
Until people start at least mirror their stuff on (eg) peertube, we wont see increase in userbase.
For that reason, if I planned to interact with a large audience, I would go to twitch, no two ways about it, but mirror on peertube so it gets a chance to grow.
There is no free lunch. We have to put in work if we want to see positive change.