Listen. When someone made the same argument a few months ago on another board, I was like you and thought it was bull****. He asked why is the leading tackler and usually 2 of the top 3 tacklers safeties on Manny defenses going back as far as his days with MSU and UT. I went through the stats and video and I had no rebuttal. In standard defenses where the DTs help keep the LBs clean from blockers, the LBs are able to make plays at the LOS. Most years on those teams, the LB is the leading tackler by far and sometimes the top three tacklers are LBs. If you are a blue chip LB, what scheme is more enticing to you. The one where you are free to make plays and potentially rack up 130/140 tackles, or the one where you will be fighting off blocks and probably top out at 80-90 tackles.
Shaq lead the team in tackles once in 2019 with 107 tackles. The other years he sat 80-90. As good as he was, he still was only a 4th round pick. Pickney wasn’t even drafted.
Now I am not saying Manny’s defenses are terrible. He just prefers a TFL over a play around the line of scrimmage. He wants to try to get the offense in a 3rd and long position and is willing to give up some longer runs before we get there. We will always be a bend but don’t break defense under Manny.