Would be excellent for Tesla if Musk leaves. They might finally make cars that have standards and quality to existing luxury brands like Mercedes, BMW etc
Quality is a spectrum. Sure, Mercedes isn't Rolls-Royce. Mercedes makes cars as their main business and turns a profit from that, Rolls-Royce is a company that makes aircraft engines and produces cars sometimes as publicity stunts (because a car built to the tolerances of an aircraft engine is, shockingly, going to be very precise and well-made).
But Mercedes is definitely a higher quality of build than like. Fiat or Ford. To an average person, you buy something like Toyota if you want reliability and a long-lived vehicle, or Mercedes for a smoother drive full of tiny little expensive gadgets that will probably develop a fault after 3 years.
(No idea why they've listed BMW here though lol, those things just love perpetually breaking down, because the systems they use to get that unique tactile feedback while driving that some people crave are absolute dogshit when it comes to life expectancy. They use a fucking chain for a timing belt instead of rubber. Don't ever buy one unless your idea of luxury is constantly having to shell out on repairs and tow trucks. If you have to experience one, just like. Get one as a hire car so you don't have to own the fucking thing.)