[chimprich]

That's because it is a SPOF. However, a password manager seems to me the best compromise along the security / convenience axes.

I memorise good passwords for a handful of my most critical stuff (and have MFA). They don't go in my password manager.

If my password manager gets compromised then I probably could lose some cash, maybe get embarrassed by being impersonated on social media - it could get very inconvenient but not catastrophic.

[NegativeK]

PW managers are SPOF that typically replace a different, worse SPOF: humans trying to remember all of the passwords.