Vance will "have the charisma" of being the focus of the palace cult (around a quarter of the country) while Trump's corpse is still warm.

These people aren't people anymore, they're cultist NPCs. They have suspended personal agency and independent reasoning about their interests in favor of the vibes, in favor of the grift, and in favor of arbitrary Strong Executive Leadership. They will say literally anything Fox News et al tells them to say.

Vance's job was always to end democracy by replacing Trump with somebody more subservient to capital who could stay on-script, while seeming less crazy to liberals. He was practically raised for this. MAGA has been trained to water at the mouth when somebody jangles their keys, and will happily transfer their utter loyalty and devotion to somebody else who can jangle keys.