The answer is actually pretty simple. Musk is a man child who doesn't like criticism. He lives in a bubble. He fires people who disagree with him and listens to anybody who fawns over him. He appeals to the loudest ones he allows himself to hear. That's why he made that dumbass truck. There's not actually many people who want that hideous, broken monstrosity, but his worshippers shouted that they wanted a truck.
He's also scrambling to get money coming in. Twitter is falling apart. People are starting to wake up and realize that he's nothing more than a lucky nepo dipshit. To soften his losses, he's doing a shitload of layoffs and cutting corners wherever he can. Quality is dropping on his products that already had quality issues. Brand recognition and reputation will start to be a net negative factor as a result.
If he wants to turn Tesla around, musk needs to pivot to producing tech for other car companies and stop making cars themselves.