But Github, being a platform, is a nonstarter.

Have there been any recent popular developments on a similar workflow that is as robust as e-mail ?

They "just" need to settle on a platform. GitLab sounds good and is used by a lot of important Open Source projects.

Did you miss the part where being a platform was most of the issue ?

I'm not sure how long GitLab can be trusted either, as well as git becoming a bit too synonymous with GitHub...

> exactly the sort of problem that doesn't happen with a Github issue/PR

What? PRs or issues being forgotten happens all the time, especially for large projects.

Yeah instead the issue will be auto-closed by some bot. Yay.