This is a bit of a tangent, but to me this suggests that not all pressures are "created equal" and there really probably could be a benefit to some sort of more advanced metric that tries to quantify the "danger" of a given pressure.
In the case of Gary, as illustrated...his total pressures remained fairly consistent over the course of the season even when Parsons went out. But what is interesting to me is that his production dropped BEFORE Parsons was gone.
For the first 8 weeks of the season Gary averaged ~3.4 combined tackles, ~1.9 solo tackles, and just under 1 TFL per game. He had 7.5 sacks along with that.
For the back half of the season... that plummeted to 2.25 combined tackles, 1.25 solo tackles, and ZERO tackles for loss or sacks week 8 or later.
Generally you would expect to see either A.) a pronounced improvement in performance, benefitting from playing alongside an addition like Parsons or B.) a steep decline coinciding with Parsons' injury but we didn't really definitively get either one. Gary saw a modest boost with Parsons added but not a huge one, and again his dropoff occurred well before Parsons went out injured. Micah didn't get injured until the Denver game, which means there'd still been 6 games in a row in which Gary didn't log a single TFL or sack in spite of relatively decent and consistent pressure production. Again this suggests to me that not all pressures are equal and not every pressure is a "dangerous" one (and it wasn't really a case of "freeing other guys up" - sometimes you might see a guy create pressures that others benefit from even if they don't log the production themselves. That didn't happen in this case; total team sack/TFL production did not improve or remain consistent tracking with Gary's dropoff either).
Of course I'm not saying we disregard pressures entirely, I'd rather have a guy who is generating them rather than not, but this is in part why for me they are a very, very limited/incomplete way to assess a player's impact. Gary's sustained pressure rate did not really benefit him, nor did it particularly benefit the team, nor did it allow him to step up when Parsons went down. Yes, production numbers themselves also don't tell the whole story - you can log tackles/stats that aren't particularly meaningful/impactful, OR have a big impact that doesn't always get you on the stat sheet, but by the same measure IMO you can log a lot of "empty" pressures too