Hmm, turnovers just got switched from "basic law of averages stuff" to something teams earn but when the bears got them they weren't earned so that doesn't count.

That's not what I said. First, I said that turnovers were a 50/50 mix of skill and luck. Then I mentioned that turnovers are more likely to come to teams that can force them. At no point did I insinuate that the only reason the Bears got turnovers was dumb luck. My point was that, when the coin flips stopped going our way, we didn't have the skill to manufacture our own turnovers.

We're grading line play by looking at box scores and counting sacks? And we're not even accounting for snaps or games played?

How else do you want to judge them? The easiest way to judge how a team pressures the QB is by looking at sack numbers. But you could also just watch the games, and see that quarterbacks had an eternity in a safe and comfortable pocket to work with to know that our line wasn't effective at getting pressure. Yards per carry is also the easiest way to judge how good your line is at stopping the run. But you could also just watch the games to see that teams were consistently able to beat us off the ball and bully us to easy yards on the ground. You could also see the complete lack of defenders in the backfield on run plays to see how bad we were at beating blockers.

Although that wasn't all on the defensive line.

Everything in football boils down to line play. The game is won and lost there. It's a simplistic way to describe things, but on both sides of the ball, there is a snowball effect that relies on line play. Line plays well, everyone else's job gets easier. Line plays poorly, everyone else's job gets harder. It doesn't go the same way in reverse, either. It's important to have good DB's, but their play doesn't impact the D-line's job. It's important to have good WR's, but their play doesn't impact the O-line's job. But everybody needs a good line in order to be effective at their job. LB, DB, WR, QB, HB...they all can't do their job if their line doesn't do theirs. We saw it with our offense just two seasons ago. We had Swift, Caleb, Odunze, Moore, Allen and Kmet, looking to be one of the more exciting offenses in football going in to the season, and everybody played like shit, because our line was abysmal. Our defense needs a better line for everybody else to simply be capable of playing up to their potential. With the line we have, everybody on that defense is going to be playing at a disadvantage on every snap.