You're talking about it as if having children is an act of god, and not a decision people make. "I hate that this person decided to have a child and take it wit

You're talking about it as if having children is an act of god, and not a decision people make. "I hate that this person decided to have a child and take it with them on a flight next to me" is a perfectly reasonable thought, I'd say. Whether the child is disabled or not is, I think, completely irrelevant.