I agree the user experience right now is pretty bad - plugins break regularly, and uninstalling one-by-one is incredibly tedious when using the default install.
I don’t think it’s a case of responsibility, more about making the Discourse product more resilient to change. I don’t think anyone would expect the core team to maintain 3rd party plugins.
I think a good first step towards making things better would be to add some kind of “disable plugin” button to Docker_manager. Then a future thing could be to make disabling broken plugins automatic based on acceptance tests.
I think it should be possible to implement that so that it only requires restarting the server, rather than rebuilding… but not 100% sure of that