> Sending unsolicited pull requests to people that clearly told you to open an issue first is disrespectful.

You do you. I do not think it is, and so far nobody has made an issue out of it.

> It appears you just assume that because pull requests cannot be disabled on GitHub.

It’s more that people that make a public repo on Github and expect no pull requests on even mildly popular software are living in fairyland. Don’t make a repo on Github when you know PR’s can’t be disabled. Or I dunno, install a bot that automatically rejects everything.