What's the plausible worst case scenario here? GitHub accidentally trains on private repos (or Microsoft is, insanely, lying) and leaks some random tiny snippet

What's the plausible worst case scenario here? GitHub accidentally trains on private repos (or Microsoft is, insanely, lying) and leaks some random tiny snippets of your code? That would be a personal violation but the actual damage seems negligible. I mean self-hosted GitLab is fine, I don't know that you're losing out on any major features. But I wouldn't worry about using GitHub unless security and control of your assets is a critical necessity, in which case you definitely shouldn't trust some VPS/cloud provider either.