There really are not too many other good mounting locations on an aluminum intake system.
The same rational could be said about mounting to the stock
plastic air-box (which is solid) VS mounting on the
flexible rubber fitting:
On the Blitz SUS Short Ram Intake, it's also mounted to a secure location:
AEM CAI MAF sensor mount location is here:
Injen CAI MAF sensor mount location is here:
I see the mount location is more of an attachment-type of detail, than anything else. And obviously, someone specialized in aerodynamics (as related to air flow temperatures) would know more about this