There is a flip side to this - is vim encrypting this data it keeps forever? If I delete something I consider sensitive, I might unwittingly be recording that presumed-deleted piece of data to my user profile somewhere to be deleted never.
Stop looking for post-hoc justifications for behavior that is clearly wrong.
Second time in this thread you’re telling other people how to think and behave because they aren’t acting like you
OK and you are doing the dril wise man tweet sincerely
How would you know?
How could you possibly encrypt it in a way that holds water? Any attacker who cares enough to get your undo file can also get your undo keys, unless you want to wire a whole system of undo-now-requires-password-auth-with-MFA