> take abortion, you are either for choice, or you believe it is infanticide

Well, no, even on abortion there is usually a position somewhere in the middle is where a lot of people end up (and you left out part of the spectrum, where even contraceptives are believed to be morally wrong), and usually the law has ended up somewhere in the middle, too.

We confuse "loudest" views with "most common" a lot these days, so I do agree that promoting the most extreme views possible to drive "engagement" (a tactic figured out by people looking for votes long before the internet was even around to introduce engagement->clicks->dollars) is a bad behavior for aggregators, but that's a hard argument to make for a business as long as we hold the current view of short-term "fiduciary duty" ruling all.