Okay, fair enough. Herm's never been a troll; he's just busy I bet.
But, if *I* were building the control methodology from scratch, I definitely would NOT want to be 100% dependent on an IAT/BOOST combo sensor that regularly goes wonky. That'd be a very fragile system, meaning your car would be in open-looped mode a ridiculous amount of the time, and you'd probably rarely have it in emissions compliance for the life of the vehicle. Besides, being 100% dependent on a sensor that only gives ambient temps after overnight (or sufficiently long) cooldown is stupid. What about when the car is only parked for 2 hours, but a storm comes in and the ambient drops 40 degrees? So your engine control methodology is wildly fragile to pretty common scenarios, and only reliable in ONE special use case?
That engineer needs a punch in the nose for being stupid, if they did just depend on "IAT = AAT after "ong-ish enough." That's one lazy, or stupid, but definitely mostly non-compliant engineer.