- You are entitled to human decency. Maintainers don't get to be rude just because they run a project. This is a common thing in a lot of projects; maintainers have power, and this allows them to be rude without concern. Not ok.
- As a maintainer, if you publish your work as open source, you already acknowledge you are engaging with an entire community, culture, and ethos. We all know how it works: you put a license on your work that (often, but not always) says people need to share their changes. So those people may share their changes back to you, assuming you might want to integrate them. So you know this is going to happen... so you need to be prepared for that. That is a skill to learn.
- Since maintainers do owe basic human politeness, and they know people will be interacting with them, maintainers do owe this culture some form of communication of their intentions. If they don't want to take any changes, put that in CONTRIBUTING and turn off GH PRs. If they want to take changes, but no AI changes, put that in CONTRIBUTING. If they don't want to do support, turn off GH Issues. If they require a specific 10-point series of steps before they look at a PR or Issue, put that in CONTRIBUTING. It's on the user to read this document and follow it - but it's on you to create it, so they know how to interface with you.
Be polite, and tell people what you will and won't accept in CONTRIBUTING (and/or SUPPORT). Even if it's just "No contributing", "No support". (My personal issue: I spend hours working on preparing an Issue or PR to fix someone's project, and they ignore or close it without a word. Now I don't want to contribute to anything. This is bad for the open source community.)