Cate Blanchett
The Oscar winner, for her amazing role in Blue Jasmine, was very adamant about not having a social media account. Even though she considers social media a genuinely powerful way of building new communities, she believes that being there is like being in an elementary school playground. It divides people and generates some not-very-positive feelings that later on invade your real life.
I think they mean that craving attention on social media is more of an American thing. If they don't, then I do.