I'm impressed by how much projection you managed to mix onto your original argument. You even use "us" as if you're the Riley in your family. If you are, boy do I feel bad for them.
But anyways, I'm more curious about what you consider family love and sincerity. He risks his own life to save them on a regular basis, is practically the Jimminy Cricket if the group, and regardless of how much he fights with them he still manages to let them know that he loves them(only to be immediately followed up by "ew nigga you gay"). What more do you even want from him? He certainly does way more then most families that claim they care for their kin. What do you consider family love that Huey ultimately lacks?
You're like one of those idiots spouting how all humans are selfish because they refuse to see the world past their own cynicism. Nothing you say can convince them otherwise because they can twist it to suit their viewpoint.