> GitHub added a feature to disable Pull Requests entirely. Pull Requests are the fundamental thing that made GitHub popular

There is a temporary solution. Let maintainers limit PRs to accounts that were created prior to November 30 2022 [1]. These are known-human accounts.

Down the road, one can police for account transfers and create a system where known-human accounts in good standing can vouch for newer accounts. But for now that should staunch the bleeding.

[1] https://en.wikipedia.org/wiki/ChatGPT

I've heard that what have to in the past been called spammers create large numbers of fake accounts and then sit on them for years, just to bypass these types of schemes. I guess you could augment with checking for some level of human-like activity before that date.