[probably_wrong]

For me: I don't trust them. You know how people often say "if you didn't want it to be public you shouldn't have put it on the internet"? Well, that. If there's anything worse than a breach that reveals my secure password it's a breach that reveals all of my passwords at once.

For other people, such as family members: I totally recommend it. It is way better than whatever password reuse they are doing now, and the chances of a breach are low enough.

My point being: I think they are overall better than not using anything, but if you have the knowledge and diligence to keep an offline encrypted file (and its backup!) up to date, then I would suggest doing that instead.