AFAIK, copyright problems are fixed by just another commit without history rewrite. There's also no need to care about outdated credentials. Should bugs be fixe

AFAIK, copyright problems are fixed by just another commit without history rewrite. There's also no need to care about outdated credentials. Should bugs be fixed by deleting all history too? That code was buggy, bad, bad, must delete? VCS just becomes glorified ftp this way.