Clearly you know little about the stock market. When a company announces projections for production, profit, etc. the price of the stock adjusts as people buy and sell. When those numbers are met, people feel confident and the price can go up providing profit for the present investors. If those numbers are not met, the price will adjust again (obviously negative) and the market continues, but now investors have lost money. That's important.
Aside from that, a company must plan their path forward. They need to know how many people to hire, how much equipment to invest in, how many parts to order, how much cash they will need, etc, etc, etc... When they fail to anticipate the future, it can cause problems and in severe cases cause shortfalls in cash which can end a company.
Yeah, running a large corporation doesn't have much in common with running a race in high school. But it does have a lot in common with winning the Super Bowl. They plan and measure and estimate and do everything important to succeed.
I really don't get why people take exception to discussing the facts of how Tesla is performing and is being run. These are facts that are important to running the company. Why is that a problem?