I don't have a good idea in mind yet, but I think we should find an organic way to higher the barrier of creating new issues on OSS projects.
Currently, everyone can sign up to GitHub and create spam issues in 5mins. Wasting maintainers' time to read and manage them.
The issue forms help a bit, but easy to be ignored. A bot, or AI, to verify the content and auto-close might also help to some extent. However, it still creates notifications.
I think it would be better to verify/filter out unqualified issues before been created.