Harvard MBAs are good at one thing and one thing only.

Extracting as much economic goodwill out of a company and its workforce as possible. Harvard business school is where non sociopaths are turned into sociopaths. They pretty much train you too not look at people as people, but as objects to trick into working for as little as possible, while giving the customers as little as possible as well.

Elon Musk has famously come out against them as they don't really create value. They transfer value from the customers and employees into thier own hands and usually kill the brand in the process.