Connor,
I just figured you were having a bad evening, or maybe you drank too much, and was going to blow the whole thing off. The comments were pretty out of character for you.
Most of what you post here actually seems pretty accurate. Adults appear when it's convenient because it's a story, and if I had them appear all of the time, it would get rather long. If they appear stupid, that's probably spot on, since we're seeing things from a 13/14 year old perspective. Most adults look like idiots to kids that age. Similarly, it's entirely reasonable that the teenage psyche would blame adults for their problems. Try raising one of these demons.
I pointed out that Will is Stefan's grandson (not nephew) because I assume he's bound to inherit some of the traits of one of his favorite people. Whether he will emulate Stefan's free love attitude remains to be seen, but my guess is that he won't. Right now, he's just trying to figure things out.
But what really shocks me is how you perceive Robbie has been treated. I think Will has shown a lot of affection and understanding toward Robbie, and actually seemed to develop a much bigger appreciation for Robbie and his relationship with his father. I think of the conversation they had in Hawaii, where Will tried to prop him up, or at the restaurant in LA after he got back from Europe....there's really no question that the guys really do love him.
Teenagers as masters of their own universe: They usually think they are.