Yes, a know-nothing message board dipshit knows more about OL coaching than a guy who has been paid millions of dollars to coach the position and has put multiple players in the NFL. Get a fucking clue.
More than 20 years ago, when I was still harboring dreams of teaching and coaching at the high school level, I was finishing my teaching licensure and took a football coaching course at Northern State University. At the time, I thought I knew a fair amount about football. The course was taught by the OL coach at Northern. He diagrammed some (as he called them) "basic" OL schemes, and I comprehended maybe 15-20% of what he was saying. It was so far over my head that he may as well have been teaching us hieroglyphics.
And this was at a college football wasteland, this guy probably getting paid $50K to coach the OL for a Division II team who usually sucks - I think Northern may have still been NAIA at the time.
Compared to that guy, Brian Callahan is a god, and compared to you, this guy is a god. The totality of your accumulated OL knowledge could fit in a thimble, and that's being kind. That is why Callahan draws a high-six-figure salary to coach the OL, and why you're a know-nothing anonymous poster on a sports-themed message board.