I understand where you're coming from. There was a lot of smoke and mirrors involving his return in MGS4 to try and make you forget about him from MGS2.
Personally, I didn't forget his appearing in MGS2 though. I guess I formed part of "the internet" that you mentioned in your original post. It was just... his character, had all this background and history... being a child soldier, being mentored by Solidus, all that jazz, he had the potential to be amazing. Yet his actual appearance and behaviour in the game itself just didn't fit. It was more Rose than him actual, their inane conversations really dragged the game down.
I remain indifferent to him after MGS4 really. The bit where he's fighting Vamp while you're taking out the Metal Gears was utterly amazing, I'll admit. But he'll never be Grey Fox, and heck, he'll never be Olga. Both of those character have one-ups on him by being involved in disgusting but upsetting death scenes, yet even before that their characters were more developed. Olga was actually my favourite character in MGS2. The reason she was involved in the game (Sunny) was such a simple story, yet really effective. Was sad to see her go.
Will be interested to see what he's like in Metal Gear Rising, at least. The Boss will probably remain my favourite Metal Gear character for a long time though, gonna take something really special to design a more compelling character than her.
It's okay though, Trucks. You're still a sexy beast.