@Gargron The Post pulls an interesting trick to distort poll results. It takes a poll which says "20 percent of U.S. adults now regularly get news on the [Instagram] social network" and recasts it as "One in five American adults regularly get their news from Instagram."
Adding the word "their" suggests IG is the primary or exclusive news source for 1 in 5. The poll only says that people "get news" from it.
Poll distortion is a favorite journalistic game.