He does, it is called fedora. The problem is that red hat has so much influence that people will follow their lead. In this case, they pretty much have to as some software simply won't work if they don't follow.
But still think its should have been something new, Fedora-CoreOS until its matured and then decide to overwrite all existing distros with systemd if the need and demand is there, instead of forcing it through the whole community while there is a large part that doesn't want it and it's not even finished or really brings something new to the table.
And yes its the people that follow the 'leading parties' blindly, and they think its cool to roll out something new, in my opinion mainly because it is new and exciting.