When I visit Super User, it asks if I want cookies. I am using macOS 11 / Safari. This is using the default setting Privacy > Prevent cross-site tracking. Not Private Window.
Then I go through the 5 clicks necessary to say that no, I do not want advertising cookies.
But I see this dialog over and over. Several times per day. I am logged in to SO / SU all day. But still the popup continues.
Make it stop.