Those people he worked hard to elect did other things to harm Tesla besides making the cars more expensive. Over the last few years about 30% of Tesla's profits were from selling emissions tax credits to car companies that make ICE cars. Those other companies needed the credits because not enough of the ICE cars met EPA emissions standards. But now those emissions standards are no longer enforced, and so there is no need for them to buy credits.
The people he worked to elect also promised, and have been implementing, policies that will make electricity more expensive in many areas. There were already several states where electricity was expensive enough and gasoline not too expensive so that a Prius there would actually cost less to operated in energy costs per mile than an EV. Rising electricity prices could make that true in more places. (And yes, I'm talking about home electricity prices. For people who do not have adequate home charging and rely on commercial charging a Prius beats an EV on energy costs in most states). That too is probably going to cost Tesla some sales.
While Musk being a loony is certainly making things worse for them, even without that you’d expect them to be in a bad place.
Where are you getting these stats/are you _sure_ they’re not US-only stats? Any actual data I find shows a healthy increase in sales on the order of 25% 2023-2024, maybe 20% 2024-2025. (Eg https://open-ev-charts.org/#electric-sales:quarter). Possibly you have a really unusual personal definition of the words ‘virtually identical’ and ‘slump’?
End result is he has neither side and neither the trucks nor the sedans are selling well!
A lot of people have a very strong incentive to attach themselves to wealthy/powerful people, and then try to manipulate their understanding of the world and events to their favor.
It's a very old story
If he hadn't been born heir to the wealth of African colonizers' emerald mines, there's zero chance he would have ever become rich or famous.
When Howard Hughes started insisting that all his peas be the same size, no-one thought he was courting a market; he was just crazy.