>There's a heartland of obvious, flagrant misinformation

If it is obvious, why does it need banning?

The bigger problem is that many people haven't learned how to process information properly. It's frivolous to just demand banning. Banning should only be a first step among many to spread media competence. How can google ban corona misinformation but just recently has made ads and links almost indistinguishable on its result page?