Not only is it the most effective thing that doesn't require an invasion of privacy, it would increase privacy and user autonomy.

But how on earth do we start a political movement around it? Difficulty: needs a 10-second blurb that does not rely on the word "algorithm".

"See what you want to see, not what's being pushed at you" is the best I can come up with.

I doubt there is a unified campaign that can attract both poles of US society, they’d need to be targeted at each individually.

Addressing center-left, middle-class women (like myself): "Worried about your son being sucked into the incel movement because he watched some video game playthroughs? Concerned that your daughter's depression is being driven by the unrealistic standards of femininity that influencers are pushing into her Instagram feed? Is your kid a zombie after spending more than a few minutes on TikTok? Did your mother become irrationally scared of trans people after she started spending too much time on Facebook? Is your husband getting into stupid arguments with people he doesn't know and doesn't follow on Twitter? Did you miss your kid's school snow-day announcement because you were trying to scroll past all the crazy right-wing conspiracy garbage that keeps coming up on Facebook?"

"Our attention should belong to us, not to advertisers and influencers."

Whoa whoa whoa, you had me until the husband part. You can't just go letting people be WRONG on the Internet without stepping up and doing something about it.

https://xkcd.com/386/

But what if arguing with strangers on the internet is a hobby that you derive much enjoyment and fulfilment from?

Third-party apps that pick comments from randos who follow politicians you can’t stand, I suppose… perhaps like the “freak” relationship from ca. 1999 Slashdot (“friends” of people you designated as “foes”)

If we managed to do it with cigarettes, we can do it with this. I will defer to the experts, though.

If "If it's free, you're the product" wasn't slogan-y enough, then I doubt anything will.