Um, you are just cherry picking information. Musk was an integral investor who helped them get the funding to build the cars and to expand the company. He is also a prick who ran off the guys whose design was that first sports car, as their business plan was sound. Build the sports car first, then build a cheaper car, then build an even cheaper model. He laid the groundwork, and got the boot just as they rolled out the first models to be sold. At that point the company was established, and Musk rushed into take credit. He disparaged the guy and settled a lawsuit. The fact that they achieved profitability as they scaled up is not really a surprise, fuck man, their profit margins are 50% on some models IIRC. Let's not act like he sat down and designed the shit.
My guess is that the reason the Cybertruck took so long to produce was that Elon has a Elizabeth Holmes method for design, sets a goal and hopes others can achieve it. The timeline still seems rushed as the bugs and fixes make it pretty much shit. The other vehicles don't have these ridiculous issues. I think this dichotomy in quality is directly related to the pivot from car guys starting the company and building the team. Heck his FSD should have billions of miles driven data. When will there be enough data to analyze?