I think that's unfair. I remember his drop off in form and Sir Alex's short lived experiment of playing Gary as a right centre back.
He wasn't Javier Zanetti all the way through but I don't think its right to say he was a liability at any point in his career. He did have dips in form but just think of the way the bile used to rise in your throat when you saw Silvestre on the other flank. I never remember Gary making me feel that way.
For the most part, up until he injured himself in 06/07 I think you could've guaranteed a minimum 6.5 out of 10 performance from Gary. He was incredibly consistent. Not as consistent as a Dennis Irwin but, rarely, did I feel like we had to worry about what we were doing at right right back.
Whereas with Gary's commentary I worry about what he says every time he opens his mouth. I feel like he's just overcompensating for the 'Red Nev' reputation. However, its genuinely painful listening to his colour work on United. I'd prefer him in the studio as a pundit. Get Danny Higginbotham to do the games.