I’m sorry but this is bullshit. Very few people complain about the speed with which things get fixed. I think that everyone understands that things take a while given the nature of the project. But the attitude is still annoying to the point people are turned away from the project entirely by those devs. They gatekeep broken functionality and refuse to help users. It has nothing to do with pay. If it did, they wouldn’t do those things either, they’d just step away.
Any developer with such an attitude should step away. And by the way, doctors do volunteer work too and they would absolutely be held responsible for bad medical advice regardless if the work was paid or not