What? you don't have to use GitHub?
Linux open source development:
10,000 lines are added the the linux kernel every day.
200 new developers every release
500+ companies involved
They can scale to these insane numbers because they donβt use github. Some good talks on this:
Discussion
I hope this is sarcasm π
It's open source so there are a lot of Git server providers and self-hosting is only a couple clicks with Gitea/Gogs.