OK, I'm not saying that Jon's tricks are in anyway close to the same style that aerials are, but....
Aerialists have been doing things like tripleflips with 5 and even 6 spins, quadflips with 4 spins, etc. for quite a while now.
So when a freeskier performs a double flat or flip with 2 or 3 or 4 spins.....yes, it is really awesome, and for all of us it looks a million times cooler than aerials.
HOWEVER, just because he does it with a style that we all prefer, does not mean that he is doing something that is way more risky and life-threatening than what aerialists have done for years.
I think that if anything, the current state of freeskiers venturing into the doubles realm should foster more of an appreciation of how difficult and crazy aerials is. Regardless of whether or not you like the style of it, you have to admit that performing a triple back with a 2160 in it is some pretty insane shit.