Originally Posted by Miles Ahead

Goalie, I see things differently. The OP didn't move because of a bassinet. He was asked to, declined, and was not reseated. So the bassinet part of the story is only background.

The OP was asked to move because another passenger didn't want to sit next to him. I think it's reasonable to discuss if there are ever any reasons where United should move one passenger because another one doesn't want them there, and if so, what those reasons might be.