alt Hacker NewsIt's totally fine to turn off issues and pull requests, and refuse all contributions. The problem is many maintainers create undue responsibility for themselves with snide responses like "PR welcome" to every issue or request. When people show up with the patches after a response like that, I'd say that they are very much owed some of the maintaner's precious time.
Agreed, if a patch is offered after being suggested then some reaction should take place, even if to clarify that currently there is not enough resource to accept/reject it and thus it might be better to temporarily rely on their own fork.