Jesus christ.
I'm just gonna respond bit by bit.
Again, you were referring to "crying" in a context that implied you really meant "complaining." He wasn't complaining. If you were actually talking about literal crying (you weren't), then you phrased it incredibly poorly (no, you meant what you meant and now you're playing a semantic game.)
Being in the top half of the top 50 interior defensive linemen IS better than average. That isn't mediocre. I'm not sure how you can actually try to argue against this, as it's pretty basic math at this point. Your Gods at PFF had him as a top-20 run defender in his lone season here, in addition. So, yes, the discussion is about the top 50 players, which Shelby placed higher than the average in by the metrics YOU YOURSELF use to back up your argument.
Yet again, proving my point that people use PFF grades to support conclusions that the grades themselves in NO WAY support!
What's next? Taking the top-32 receivers, picking the one that grades out as the 15th best in the league, and then calling him mediocre? It's such faulty logic.
This is heavily oversimplified and slightly erroneous. Seattle ran more legit 3-4 in 2021 than they did 2022. They were a multiple front that really ran mostly nickel 2-4/4-2 stuff. They had success when running the 3-4 stuff in 2022 (just like they did when running 3-4/bear front stuff in 2021) but generally didn't do it enough.
In addition, the scheme was poorly implemented and the run defense was atrocious. You cannot blame this on PFF certified top-20 run defender Shelby Harris, however, unless you'd like to eat shit on the PFF point.
While the defense around him was fairly atrocious, I agree with PFF however that Shelby was all-around above-average and put in a more inspired effort than essentially anyone else on that front did. He played his ass off, was a bona fide plus run defender, and added some stability and know-how to a unit in shambles.
How anyone can begrudge the guy for having a certifiably good year for us and then leaving just because he's talking about how he didn't want to be traded at the time in 2022 and doesn't like 200 days of rain a year is beyond me. It's so fragile.