git alone doesn't protect you against accidentally deleting your code directory and whatnot, and GitHub is the most accessible remote git offering right now.

Isn't this what backups are for?

Your operating system might. But it doesn't protect against your machine dying. That's a different problem with different solutions. You could self host on a different machine...

Is github the most accessible? It is the most popular and best for discovery but a discussion around if gitlabs or bitbucket being more accessible could be had.

I was thinking: what about just some different PC where you got ssh access. Yes this might not be accessible enough. So the next thing could be gitlab. They offer free private repos