Linus wrote git to be used via email as part of its core design, so that was just the way he rolled back then. GitHub and Gitlab and all the cloud platforms and tooling came afterwards and it took time to reach a critical mass, and even then, some folks stick to what they’re used to.
Looking at Linus’ GitHub profile, looks like not much has changed — 100% commits, 0% everything else.
Linus does not fuck around (lemmy.one)
An oldie, but a goodie