That is unnecessarily harsh.
I like Wright and thinks he gets a lot out of the ability he has. If you ask me, he plays very physical and is not intimidated. He knows what he is doing and is versatile enough to move around. He contributes on ST, which a lot of DL aren't athletic enough to do. He isn't big enough to anchor against the run like a Seymour or Wilfork, but he is athletic and versatile. He runs very well for a DL, IMO, and there is a role for him at what I consider a reasonable price. Compare him to the other reserve DL on 3-4 teams around the NFL.
Pittsburgh has Chris Hoke, Travis Kirschke and Nick Eason. I would argue he compares favorably with them as players, is younger than Kirschke and Hoke and better than Eason.
San Diego has Ryon Bingham, Jacques Cesaire and recently had Igor Olshansky. I think he compares favorably to all three. Bingham recently re-upped for a similar contract to Wright, Olshansky just signed for much more with Dallas and Cesaire is cheaper but signing a long term deal a few years ago.
Dallas just paid Jason Hatcher and had Tank Johnson. Johnson they had cheaper because of off-field issues, and he lacks the versatility of Wright. Hatcher is working off his rookie deal and is due a big raise soon. They signed Olshansky to replace Canty.
If you ask me, Wright compares favorably to all those guys in different ways when money is factored in. I think he has done a pretty good job as a 5th DL for the Pats, plus provided extra value on ST. He just was out on the market, so he price was set by what other teams were willing to offer (and he had at least a couple interested), and he knows the system well.