[toong]

Git allows you to rewrite history, that is not the problem.

But you might have a hard time chasing down every copy, it's a distributed system by design.

[wegs]

Once you rewrite history, you've basically broken the git concept. It's an emergency feature if you've accidentally committed a security token or similar, or before you've pushed upstream, but if you're rewriting history with any sort of regularity, you're using git very, very wrong.