It also has pretty neat support for emailing patches. And it's practically impossible to lose data as long as any single dev still has an intact .git director

It also has pretty neat support for emailing patches. And it's practically impossible to lose data as long as any single dev still has an intact .git directory. Nobody is preventing the devs from just setting up a second "upstream" and pushing to both github and gitlab (for example) or any other service at the same time.