D gets grief and has been for years. I think that D still wins championships, we just need to adjust our way of thinking when it comes to "what is a good D?"... In this modern game, offense rules. And D will just not ever be what it once was unless there is a major shift in the league. Fantasy football, ratings, and player safety are such huge issues that the D is very limited - especially when compared to 10-15 years ago and beyond.
All that to say : DHT (and his buddies Jones and Collins) are key building blocks on the SB winning team. Young and talented. Team-oriented. Hightower was more than many thought he'd be. I hope his career continues to trend upward as soon as he shakes of this injury/surgery.