In my opinion, you're missing the point of the TE position changing in the league. No one is saying "blocking isn't as important" though it's easy to paint with that broad of a brush. Well, I'm not saying that's the case annd I think there's a few others that think the same way I do.
We are saying the position has changed over the last decade; dramatically. And, due to that change, the type of tight end drafted has changed from more of a lineman to more of a receiver. A large part of that can be credited to the contact rules (defenseless player penalties) that the league keeps adding.
Numbers?
Looking at 2015 you'll find three or four TE's in the top 20 for reception yards. If we go back to 2011-2012 you'll see that same number found in the top 15. However, if you go back a decade it was an anomoly to see a TE there ... if you did, it was one, maybe two on an odd year.
It's a Brandon Greene versus OJ Howard type athlete that's changed. If you stop and think about it for a minute, you'll see that position has changed with your Tony Gonzalez type guys, your Sterling Sharpe type receivers ... Kellen Winslow comes to mind.
Then we saw Jason Whitten ... Hernandez ...