> Github does not expose a public bug list or any issues page, hiding their problems deep in email chains

Which email chains is this referring to? GitHub/community is fairly active from the community perspective. GitHub rarely looks at it anymore, prioritising their Enterprise roadmap.

> Github often breaks on firefox and safari, browsers with millions of users

[[citation needed]].

I’ve been as annoyed as everyone with the GitHub frontend performance since the React rewrite, but never really faced breakage in Firefox. This claim is repeated a few times in the article, but without any links.