"Everybody" is on GitHub. For Codeberg contributors, bug reporters, ... probably got to register first.
Also: GitHub is so established that for many people git and GitHub are the same thing.
Also: GitHub is so established that for many people git and GitHub are the same thing.
If a person really cares about your project and wants to improve it and not just boost their own GH stats - creating an account takes no time or they can always send you patches via email.