All depends on the person, their goals, their expectations, the experiences they want to have.

Agree we should not deceive anybody that doing this would make them rich or have a successful business. Most startups fail, startups by new college grads who never had a job might fail even more than normal startups. But if an adult wants to burn a few years of their 20s this way, fine. Maximizing earning efficiency of earnings in your 20s might not be optimal either. Maybe you hit a local maximum and would have much higher earnings later after discovering something by following your nose for a few years.