https://keepassxc.org/blog/2020-08-15-keepassxc-password-hea...
This is because they create another problem when anyone you talk to will say they have their password and just increment a number for every password change. That way they’re not having to remember a whole new password every few months. So there’s never much of a change in anyones password during these rotations.
- abcde1 - abcde2 - abcde3 - …
However, if you use a password manager, and have access to it, I think forcing key rotation on a short schedule actually increases security. The downside of course being that most people don't use a password manager, and most people use the same relatively unsecure password for everything.
> Verifiers SHOULD NOT require memorized secrets to be changed arbitrarily (e.g., periodically). However, verifiers SHALL force a change if there is evidence of compromise of the authenticator.
Source: https://pages.nist.gov/800-63-3/sp800-63b.html#memsecretver
The policies are the problem and the industry has recognized it so they’ve moved away from those recommendations.