Kirk having a son is wildly out of character
There’s no way that Kirk who cared so much for his brother, nephew, and his crew would just never mention him once and be fine with having zero relationship. He was so over joyed when Miramanee was pregnant.
In the writer’s guide, Bones is supposed to be divorced with a daughter Joanna. Unlike Kirk, it makes sense that borderline alcoholic Bones would keep some stuff to himself.
I find Kirk to be out of character in all the movies but this has to be by far the worst example. Every time I try to watch the movie, seeing David takes me right out of the story and I end up turning it off.