So what? That implies that someone should believe someone when they say "look, the email address on this commit says this person's name -- it must be that perso

So what? That implies that someone should believe someone when they say "look, the email address on this commit says this person's name -- it must be that person!". This all comes down to repo ownership. In your fork of a repo, you have the ability to fake any history you want. Why should that bother me? GitHub should stop auto-associating emails to usernames -- that's the actual problem here.