Site owners should be punished for those banners, as they could refrain from using third party tracking cookies instead.

Hopefully they can't. Maybe that way we can finally get rid of those pop-ups because there will be a very large amount of noise.

The EU law doesn't specify the mechanism used to inform the user. If you look around at different websites, several mechanisms are used, some more obnoxious than others. Popups are the worst user experience of the lot.

Unlikely -- those links usually don't contain links to your platform's respective app store.