I kind of expect forks of Ubuntu switching over to Debian or Devuan in droves, which we're already seeing more and more of.
Because Canonical makes so many bad decissions (and keep doubling down on that too with every new LTS release), there are literally "beginner friendly" distro's out there based on Ubuntu, who have to waste so much time and energy removing all the crap nobody wants every single time, perhaps Mint and Pop OS will continue to be Ubuntu forks for a few more years since they have much bigger teams, but the smaller forks like Vanilla OS for example went like "fuck it, we'll be based off Debian instead of Ubuntu from now on!".