Before I really started paying attention to Geno, I also had some thought he was a Air Raid/YAC creation. When you start reading scouting reports, watching his throws package, etc., that thought HAS to fade away if you're being objective.
But things like seeing all the varied throws he makes (and especially the touch on them) were an impressive selling point. The only thing he really needs to prove from a throw department is that he understands when to drill a throw in.
He understands touch.
He throws the fade very well.
He fits throws into the second level.
He's willing to take a hit to make a throw.
He throws the deep ball accurately and with touch (As a Mizzou fan, I'm used to watching strong-arm guys rifle a great-looking bomb that ends up 6 yards over the WRs head... cough, cough, Blaine Gabbert, cough, cough...)
Also, seeing the chart about him throwing to various areas of the field was a cementing bit of evidence. He can threaten every level of the defense.
Complaining about a guy being a product of YAC and just making accurate throws to WRs when the new coach is a WCO disciple seems silly/naive, too. That's what the whole WCO is predicated upon!
"You gotta love livin', cause dying is a pain in the ass."