Some folks really don't understand they can absolutely get what they want out of the fediverse, they're that accustomed to the limits of the more mainstream options. It's whatever they want it to be. If you're tired of not seeing enough of something, there's nothing stopping you from creating your own instance or a community within a pre-existing instance and rallying others to engage. You're always bound to find someone with a few similar interests around.
It will never grow or change if nobody is willing to directly participate in what they wish to see grow or change.