Not sure where you're getting this from. The guy was never a fan favourite, no matter how good he was (or wasn't). Think that has more to do with his ornery personality than anything.
At first, I was kind of pissed about how Nix couldn't get anything for him, but it's become clear he didn't really have much of a choice.
Honestly though, I don't think he will be missed all that much. Not sure where he stands in the all-time sacks list, but if they did an all-time meaningless sacks list, he'd be close to the top.