The legislation requires you to ask consent for non-essential (ie. tracking) cookies. So unless they put a tracking cookie on their site the behaviour is correct, and that text is simply incorrect.
That's my bad for not quoting further, the very next paragraph is:
> First-party cookies are set by 1Password. They help calculate things like page views and visitors to the website. Third-party cookies are set by 1Password affiliates for commission and advertising purposes.
