Putting aside the questions of durability and being too tall and low on the learning curve (all of which can become positives), the pick is a good one. Going by his college play, he is a good and potentially great DE.
There was not an obvious, "no brainer" pick at # 28.
A good DE makes your corners and safeties better, as well as just about every other position on your defense.
Less time for the QB means less time your D is on the field, and therefore more opportunities for your offense.
It's all in the dominoes, my friends.