Clearly Don Jr. has some "issues" and has internalized some of his father's views on women. Don Jr. was 12 when his father very publicly dumped his mother, and the other two were around 9 and 6. Don Jr. would have been affected most by the divorce because he was the oldest and would have better understood what was happening. He clearly is motivated by trying to get his father's attention and approval. And regarding Ivanka, you don't have to be a psychologist to see that it is not healthy to have two parents (Donald and Ivana) who are so obsessed with appearance and status. Ivanka was fairly young when she had her first plastic surgery on her face. At some point she also got fake boobs. Perhaps that's completely normal in the setting she grew up in, but it contradicts her public persona of being a businesswoman and mother who wants to be judged on her accomplishments in those areas rather than on her appearance. I hope Kai opts to skip the plastic surgery and daddy-pleasing route and becomes her own person.
To be fair, the Biden kids have their own issues, but for different reasons.