I don't think it's that simple.
Tesla sales were already slowing way before Musk turned full MAGA and he knew that. Competition showed up, states started cutting EV subisdes, especially in Europe etc. Tesla was never going to achieve the 50% / year growth that hey announced, and hit 20M car sales by 2030.
I actually think that may be one reason he did turn to Trump. It's a last ditch attempt at trying to save his empire.
People will point out that he is the richest person on earth etc etc. This is all based on valuation levels making pets.com like something Buffett could buy. The only liquid asset he has is Tesla. It's the only one on which he cashed in tens of billions of $, and it's the one he used as collateral to fund his other ventures. If it goes back down to earth, he's done.