YouTube's reach is as high as a medium can go for teens 13-17. (Media people know that anything higher than a 95% reach to a demo is wishful thinking.)
More than two-thirds of Gen Z's total social media time comprises YouTube and TikTok.
Reddit is small by comparison, but it is posting insane growth numbers because of its perception as an unbiased source of peer validation.
Facebook is dead to teens.
Gen Z (b. 1997-2012) will command over $12 trillion in spending power by 2030.
But something is happening with its younger half. They're distrustful of algos, in part because of what they're doing to their mental health.