J.D. Vance isn't running to be Veep. He's running to be King of the MAGA, which makes him the most dangerous man in the world right now.
Vance knows that although Trump's endorsement is temporarily valuable, his supporters all end up indicted/bankrupt/disbarred/threatened with lynching.
But Vance also understands that this is a game of musical chairs: yes, most players end up losing, but obese, angry, 78 y.o. men facing multiple indictments generally don't have long shelf lives, and whoever's Trump's bestie du jour when the music stops (aneurism happens/literally shits himself in public/actually goes to jail) will inherit the MAGA crown.
Vance hears the music slowing down, and is stepping in at exactly the right time to be the winner when it stops.
Takeaways:
1. It's a good strategy.
2. If he pulls it off, he'll be far more dangerous than Trump, because unlike Trump he's smart and ambitious, and Vance is ruthless where Trump is merely cruel.
3. All Vance's rivals will fall in line, because all authoritarians are secret cucks at heart. They act macho, but they always fall in line when told.
4. In the meantime, to remain in the game Vance will do ANYTHING Trump asks him to. Anything. Unlike Pence and Barr, he will exhibit no principled independence at all, ever.
5. I hope Kamala's team understands this, and preps her to destroy not just Trump but Vance himself at every opportunity.