Two thoughts here: either the Bears are extremely smart and are forward thinking and the rest of the league will play copycat in the future, or they are just trying to be the smartest guys in the room and it doesn't work out.
1) Last year some were confused with the Bears selecting Loveland when they had Kmet. Well, they went a lot of 12 and it worked out extremely well. This year let's grab another skilled TE and and play a ton of 12 and 13 with 3 great blockers and athletes that can hurt you vertically.
2) Screw pass rushers we are going to cover really well on the backend with speed and good cover guys. Like someone said above, when the Bears DB's got healthy the defense ascended. This plays into the Poles line about now "QB can hold the ball a little longer". This seems risky but let's see it play out. I still think they grab a veteran DE before the season. I also think Booker is going to have a massive year.