You are correct. Trump is somewhat unique with his agenda. Should something happen to him, I am not sure that JD Vance would pursue the same course. Trump is certainly one of a kind.
And as long as our intelligence services remain intact, he is at risk. Like JFK, Trump is another target for them. If I were him, I would end the FBI, CIA, NSA, and half of the other remaining intelligence services, and start from scratch. This would absolutely heighten their motivation to take action, but it is time they were leveled back down.