[rurban]

git bug uses github only as backend. And optionally.

Email workflow just lead to the same unpleasant experiences as with Linux, FreeBSD and similar dinosaurs

[u801e]

I find reviewing code on GitHub unpleasant. A lot of scrolling is required and it's difficult to find previously written comments and their responses. You can't really determine who is responding to whom if more than 2 people are involved.

None of those things are problems when reviewing code via email.

[loeg]

FreeBSD uses Phabricator and occasionally Github PRs for sharing and discussing patches, not email.