I am unhappy about Tesla's slide. My car is indeed worth less as there uncertainty about the company's ability to provide parts and services long term.
More importantly, Tesla was an American company making cars in the U.S. and leading the world in production and technology of EVs. Musk has stupidly pissed away Tesla's position and ceded it to Chinese companies. Perhaps this sounds overly nationalistic, but leading in one of the key industries of the coming decades in the U.S. would have been good for the country.