European Union Justice Commissioner Didier Reynders recently told German newspaper 'Welt am Sonntag' that the European Commission is aware of how annoying cookie consent banners have become...
No. Most of the time there is a Accept all button, but a Manage button and then another popup where you have to uncheck everything and then Save. Pretty annoying, especially on mobile
Do Not Track is a browser setting. You enable it in your browser settings for all websites. All it does is ask the website to please "not track" you. Most sites of course don't even check for the setting.
The law in California is just that the privacy policy must clearly state if / how the site is honoring Do Not Track, not that it must be presented to you as an option or even actually honored at all.