Growing pains are a separate issue than the problems associated with "non tech minded people putting up with learning a new service".
The first is a timing issue. Give it some time and the issues will resolve themselves as far as the average user is concerned. The second one implies inherent difficulties arising from the "tech mindedness" of the users and its interaction with the service experience. I'm saying that the average internet user today is "techi minded" enough, even if they don't consciously know it, to understand how to use fediverse services intuitively, unless we overthink the introduction and scare people away.