Lots of discussion here of whether #Mastodon is fundamentally good or could become like the birdsite.
But the #fediverse isn’t one or the other. The network is whatever we make it.
Anyone with coding ability can create an instance that implements a feature, like say QT's, then people will got here or restrict it as they wish. Several instances have done this with various features. Sometimes it catches on.
Eugen is the most influential, but he maintains that by good service. It's open source, no one owns or controls Mastodon.