I don’t use GitHub because it provides me with just Git. I use it because it’s provides hosted storage, free CI, issue management, code search across millions of repos, releases/downloads.
I've had a project shut down by Github because of petty ( and unfounded ) content flagging by a competitor. It took a week to get a human involved and it almost killed the project. I will never again put the fate of a product in the hands of someone else's arbitrary, black-box algorithms.