Rebasing is for advanced git users who knows what he’s doing. If one does not know how to use it or not feeling comfortable in general, he can happily take his own code and try to merge it into the latest version instead. No one is judging.
For the rest of the world where projects are open-source, more often than not, not those projects inside a corporation where only the team lead is making decisions, it’s a powerful tool to settle down conflicts sort out history.
One does not need to change the history again, if he’s not comfortable with it. Just use git as if it’s centralised VCS like SVN. No big deal. In fact, in corporations you do. There only needs to be one person who manages the repository.
You can tell his human because the code has whitespaces.