I do think the impact of this will be overstated, in the big picture. The vast majority of Americans (and people) don't use Twitter. An editorial tag from twitt

I do think the impact of this will be overstated, in the big picture. The vast majority of Americans (and people) don't use Twitter. An editorial tag from twitter isn't really going to change the impact of a tweet in my opinion, other than limiting its exposure on Twitter itself. But it would be hilarious if news orgs use this as a cue to give trigger warnings when they quote a tagged tweet. "Warning: the tweet we are about to show you violates Twitter's trust and safety rules; hide your children before we reveal what [prominent public figure] tweeted!"