There are many ways to look at this. I think the way that Poles was looking is that Claypool is almost certainly going to be better next year than a player drafted with that pick and that he gives the Bears something in the ballpark of an average receiving unit for the rest of this year.
This also means they have close to unlimited resources to fix their lines in free agency and the draft, knowing you have two starting caliber WRs at very low cost. To me, past QB, that is always job #1.
I still don't think his production or projection are worth a high round 2 pick, and it's logical to look at it from that perspective as well. It brings up the tough decision of having to decide whether or not to sign both of your top WRs in the same offseason, and if everything works out, at a very crucial time for the team. But there is always risk, and I think I agree with this one.