Given the absurd number of sites that require a login for no discernible security reason at all whatsoever; I get it.

A “Common” password makes sense. This password should never be used to log into or protect anything secure however.

Similarly a “Common” password might be used to enable login more easily from certain devices; but ideally this “temporary” password should probably be something that is, yet again, different from the first “Common” password you use.

It boggles my mind that someone like this isn’t at least using a specific passphrase for secure work accounts only.

While I can personally understand a need for some password reuse across multiple domains; at least there should be some separation of larger “superdomains” such as “work”, “personal” and “throwaway” so that breaches don’t have such a catastrophic impact.

A system of generating secure, unrelated but memorable phrases (for you) for those times you can’t carry or use a password manager is frequently essential. That way you can recall the password on the fly when it is asked of you; all you need to do is think about the unrelated thing you attached that information to.