Hello @Harward!
Regarding your post, there is a feature request for tracking password expiry dates here:
Regarding whether or not password expiry should be enforced or not has been a heated topic of discussion here. Current thinking is that it is unnecessary if strong unique passwords are used (like what you would create in Bitwarden), and expiring passwords can actually cause more harm than good to those NOT using a password manager because it has been observed that people tend to make shorter, more memorable, and more guessable passwords if they have to change them frequently (and they tend to re-use them for different accounts, which is really bad).
There is a recent article in the Washington Post that describes the issues pretty well:
https://www.washingtonpost.com/politics/2022/08/18/mandatory-password-updates-are-passe/