Just recognize that unless you do ban advertising, the result of this change will not be what's intended. The intended result is that websites, in general, stop tracking anonymous users. Instead, it will result in every user being explicitly tracked.

The most important issue here is that the political feasibility of reducing tracking of anonymous users is equivalent to the political feasibility of banning advertising.

(I'm slightly overselling here -- in reality, a good amount of advertising of the "sponsorship" form would still work. But the impact would be large enough that most websites would force login as I describe rather than stop tracking people.)