I can agree that a 'password manager' as a service is less secure than a 'local password database that's not a service', but that's not the comparison the OP ma

I can agree that a 'password manager' as a service is less secure than a 'local password database that's not a service', but that's not the comparison the OP made. They compared passwords as a service to reusing a single password and said it was the same, which IMO is foolish.