I have to believe the peer pressure for having a green bubble is pretty intense. Today’s teenagers are still mostly children of boomer/gen x parents as well so their hand-me-downs aren’t going to be top shelf android hardware.
I’d be interested to see what these numbers look like in 6 or 7 years. 22-23 years old is when you first have disposable income and are still idealistic. The openness of Android was a big draw for me at that age before I eventually switched to iPhone