Also, what some people here don't understand (@OpenStars did), is that the Fediverse is not this huge global revolution that they assume it is. At this point, the Fediverse caters to a VERY specific demographic, and trying to make a "Mezcal" or "Trip Hop" community on the Fediverse is just like trying to create a Board Game Design community on Subaru's Post-sales forum.
Case and point: soloRPG on the Fediverse has existed for over a year, and amongst all the Fediverse instances, the interest and demand for this community is so small, that 99% of its contents have been posted by a single dude.
And regarding shitposting and cringe circlejerking, I don't know about other instances, but since the latest update, the default landing page of Kbin is whatever you set as "homepage" in your profile's settings. Also, blocking magazines and users is pretty easy and does wonders to stay away from shit you don't want to see.