That happens so often with non-corporation FOSS. Some dude makes something cool and shares it for free, and in turn they get a butload of entitled support requests of idiots who think that "customer is king" applies for stuff they didn't pay for too, and who think that the developer owes them something for using his software.

A similar thing happened with M66B. He got so fed up that he pulled all his apps. Luckily people managed to talk him out of it, but it's really understandable.

Forking against the license wouldn't solve the problem of not being included in distributions though. No sane distribution would include the fork.

No, that came after he changed the license. Linux users installed an old version because that was the newest version that was allowed to be packaged. Then, people gave bug reports and feature requests, based on that old version (which were already addressed in newer versions), mostly because they didn't know any better.

It's not entitlement if you want to use the package manager on a linux system.