While you're not wrong that Trump is just a puppet for a number of masters in various hierarchies, there's one key attribute he has that makes him indispensable - the cult he managed to build.

With him gone, do you really think that any of the current replacements being fostered could actually get anywhere with MAGA? Do you think that any of the people in question, let it be one of the Trump kids or JD Vance or quite literally anyone from his inner circles, replace him as the cult leader?

Trump is uniquely positioned as both the executor of the will of this cabal, and the cult leader of the morons. With him gone, the cabal will be hard pressed to push for another candidate who can move even remotely as many voters as the orange turdsack did.

With Trump gone, so will be the MAGA movement, and said cabal will be back to, well, not square one, but it will be a major setback until they can find another mascot who can charisma the moron third into voting against their own interest.

And that gap, that few years will allow for a crucial thing: "re-education". With Trump gone, the MAGA followers will be able to re-evaluate their stances more freely, with reduced effects from e.g. sunk cost fallacy, and can be taught to recognise populism and how it actually negatively affects them by preying on their weaknesses.