There may be a lot of truth to that, but I've absolutely seen women in that age group play games on their phones, e.g. Bejeweled, or, famously, Tetris at world record breaking skill levels:
https://archive.boston.com/news/globe/magazine/articles/2007...I would not know about unboxing videos, but there are several cable channels that seem to show nothing but hours and hours of close ups of hands fondling more or less tasteful necklaces, and I'm pretty sure those do not cater to toddlers.
