Linebackers and safeties are becoming so versatile that you can disguise a shit ton lining them just off of where they should be to make the rest of the read reliable. I have to agree with Alex Smith. Brady had the privilege of playing with good to great rosters and in a terrible division. Playing at a disadvantage to DEs isn’t something he had to do often so of course it seemed more cerebral.
The ability to do that depends on discipline and a steel trap knowledge of the playbook on the part of the offense though. Basically you’re trusting your offense can outpace the defense pre-snap.
I’m not saying you’re wrong, I just want to point out that another element of this is how impatient the league has become with a lack of success. I see bad teams with coaches on the hot seat change huge swaths of the scheme from one game to another. That’s not how you establish a fundamental understanding of the playbook, not to mention the physical discipline to not make mistakes during the motion.