Might even keep track of how many times the browser user hits banned posters on a given site. So after like the 10th time you try to go to www.twitter.com\donaldtrump and www.twitter.com\maga and www.twitter.com\rondesantis, the browser would begin to assume that the politics of the site in question didn’t align with those of the user, and would begin to default to alternate sites, or maybe give a popup giving the user the explicit choice. Then the cancelling sites lose more hits/opportunities to brainwash than just directly related to the specific banned posters. That’d put a pair of Vise-grips on their balls!
Yes, that is a clever thought.
This modified browser is an extremely simple idea that could have enormous impact...it could be implemented as a browser plugin but that might temp those who control updates to that browser to disable the plugin...but they cannot disable a modified open-source browser.