People can’t remember 80 passwords so they reuse the same one, that password eventually gets leaked and 9/10 times it doesn’t get leaked due to a targeted attack or a compromised machine but rather due to a breach of a service you signed up too.
Sure password managers have issues, they don’t solve user related errors and can even add to the attack surface of a machine they are running on but that’s really not important...
Using password managers and generating different passwords for each service reduces the blast radius from any breach.
This is why I don’t care if the password manager has the best encryption, or does it even encrypts at all or does it uses the clipboard vs some more secure side channel. Yeah that’s nice but that’s not in my threat model.
Which is why I don’t care if your password manager is a spreadsheet, it’s a terrible choice for a business because their threat landscape and the fact that a spreadsheet won’t allow you to audit who has access to what but for you or your mom even that is better than using the same password everywhere else.
Heck at home print your passwords and store them somewhere safe... put them on a post note for all I care as long as you live alone or at least not with anyone you wouldn’t want stumbling on that list...