There is a hidden problem with licensing here. Developers are giving Github the permission to use the code with a different license [1]. The clause sounds broad enough for them to justify training copilot with it. This allows them to disregard the license with which the project is published. The developers don't have the protection of a FOSS license anymore when you host there.

[1] https://docs.github.com/en/site-policy/github-terms/github-t...