This. The "weird machine" they built in the original exploit is the single most impressive exploit I've ever seen.
The knowledge of even what the scope of the attack surface is is incredible, beyond any other exploits that have ever been made public.
I heard that Apple had a very hard time even understanding the exploit when they rushed a bandaid-patch for it, leaving most of the holes unpatched for the time being.
This isn't the first weird machine exploit used in the wild, and the people who respond to these kinds of things are quite familiar with them.