That's probably why you're writting theory on this forum ...
As opposed to what, coaching for the New England Patriots? Everyone here wants to be a coach?
There are many teams in this league that have destroyed top QBs with light guys rushing the passer. How many examples do you want?
The Rams hurt Burrow, the Bengals hurt Stafford, the Bucs destroyed Mahomes.
Should these coaches give their Super Bowl trophies back because they used Shaq Barrett and Von Miller?
Look, Belichick may have no use for guys that can't set the edge, but it is undeniable that he is using most of his assets to draft pass rushers: Judon, Barmore, Uche, Jennings, Perkins, Winovich. It's no accident. How much more do you want him to spend on that particular aspect of the game? He's heavily into it. Uche and Winovich can't seem to hold the edge. They are the kind of players who may do extremely well for these other teams.
Belichick's not the only one in our division either doing it. Look at the Dolphins and the Bills. Hell, the Bills are spending one pick after another: Rousseau, Oliver, Epenesa, Edmunds, Basham, etc.
It's pretty obvious every team places a premium on QBs first, then pass rush.
Belichick is no different than any of them. This is why cornerback is simply not the priority that the DL is for Belichick.