It was a shit show before GitHub. I used to email code. I used to have to find random IRC rooms, follow random contributor guides, or beg for access. I remember one project required me to download some torrent bullshit just so I can submit my patch.

As a contributor, I can't go back to creating multiple accounts and trying to figure out how the hell I give you code.

I don't care if GitHub is the defacto for open-source projects, as long as there are competitors and mirrors.