I guess now is as good a time as any for them to start using a proper password manager.
Personally, I recommend Keepass - it has multiple clients for all platforms, and you can keep the file in sync with a program of your own choosing, like Dropbox, syncthing or whatever you like.
I put all my passwords in a text document, then print it on a little strip of paper and shove it up my ass. Whenever I take a crap, I dig it out from the turds and try to memorise some of them again. Then I shove it back up there where noone else can find my data and I won't lose it.
No-one should be using any password manager built into any browser, neither Chromium-based nor Firefox-based. Browser password databases are almost trivially easy for malware to harvest.
Go with something external, BitWarden or 1Password, or if you are entirely within the Apple ecosystem their new password system built into iOS 18 is apparently really good.
A friend has a notebook next to her computer with all her passwords in it. Initially I was horrified - what if you're burgled? - but actually it's genius. Much more secure than letting a browser remember them, and she doesn't even need to memorise a Bitwarden password.