These guys are spot on. This is how I view the whole memorizing everything BS: that's what books are for. You need to have certain memory items in your head and ready to pull out at the drop of a hat. Those would be the first few items on an emergency checklist that are time critical at the time the emergency is happening so you can get yourself in a good position to pull out a checklist. Those would also be other things that you simply need to know to operate the aircraft safely and efficently. But random stuff that has absolutely no bearing on operating the aircraft? Bite me. Sure I'll know where to find it, but there is no need to know random details about pitot static sytem theory when I can't control anything about the pitot static system other than "Heat - On/Off" and "Alternate Air - On/Off."
A great example I heard from this guy on this Saab 340 checkride. I'm going to screw up some terms here, but you'll get the idea.
The examiner asked this guy and his partner at what EGT the amber warning light comes on for engine overheat. They both blurt out "996." The examiner says "Or maybe, about 1,000? That's great that you know that, but really guys. That's how this checkride is going to go."
Sounds to me like the dude that gave this guy his checkride (that would be the dude that started this thread, not my example) would fail him for saying "About 1,000" instead of 996. What's the difference? If you don't have a digital display, you probably can't tell the difference between the two numbers on a gauge. That, to me, is crazy. You obviously know how to operate your aircraft in a safe manner, but you get nailed on a technicality when you actually do understand it? Dudes like that need to get introduced to MikeD.