It's amazing this even needs to be stated.Why not? Politics isn’t a “bring your kid to work day” and international diplomacy isn’t a no contact sport.
If Ivanka had limited things to the standard ceremonial involvement I’d agree that any rudeness would have been out of place. But she and Jarad clearly want more than that so why the expectation that the ceremonial deference still applies?
Everyone is just calling it out for what it is.