I have no issue whatsoever with tall QBs, and I agree that height is an advantage. But so is mobility. I'd rather have a 5'10 QB that can run than a 6'5 QB that is a statue, if their arm strength and accuracy is the same. Look at our starting QBs since Joe Ham:
Marshall - 5'10
Thomas - 5'10
Lee - 6'1
Washington - 6'0
Nesbitt - 6'1
Bennett - 6'3
Ball - 5'11
Suggs - 6'4
Godsey - 6'2
Hamilton - 5'10
Arguably the 2 best QB's we've had in the modern era were both 5'10. We only had 2 QB's taller than 6'2, and they were the worst QB's we've had in at least 25 years. I just don't understand the fascination with a big QB, especially with our current personnel and our OC's expressed desire to run "multiple" systems. A QB that can't run dramatically reduces what you can do on offense in this day and age. I know tall =/= slow, but there's definitely a correlation.