This is such an own-goal. Before worrying about censoring unwanted content, companies should spend their time on stopping promoting it (and building client side filtering controls) which is just as huge a problem and not anti-American to fix. The problem is that companies want the flamebait and toxic content to drive enragement engagement ad impressions, but don't want to be accountable for the stuff that's just too…
"Companies want the flamebait...." The moderation system on reddit seems to heavily promote group think. Actually promoting controversial comments as a default would be interesting.
Controversial is subjective. Would you like FB/reddit to promote holocaust denial?