Yes, clearly you do.
Again I don't see what's so difficult to comprehend here. The Bears invested all the money into the defense for Lovie and have flipped that under Trestman. Gee what a fucking shocker that the defense has regressed. What the fuck do you people expect to happen? All the patch work mercenary FA's and under performing draft picks are going to somehow magically produce be a top 5 unit? Not to mention all the injuries as the old vets that were once great have now over the hill and injury prone. The D simply doesn't have enough talent to overcome the injuries.
It's on Phil to hire a better DC and hit on his draft picks and FA moves to improve the defense, not Trestman.
You steer the conversation in an entirely different direction and still make no sense.
Yeah, the defense has regressed under a more offensive-minded coach like Trestman. That was to be expected. But it's regressed too much, injuries or not. And, again, you're trying to pin the blame for the DC hire on Emery when you (should) know damn well that Trestman was part of that hiring process. No coach is oblivious to the hiring of his own staff. So he's getting part of that blame as well.
And you know what would've helped keep those five blowouts under Trestman's watch from happening? A fucking offense. Which, again, is supposed to be Trestman's expertise. Yet the level of the Bears' offensive incompetence under Trestman is way, way worse than any level of defensive incompetence under Trestman.