Yes, he made a lot of mistakes but it wasn't clear to him at the time. And of course he didn't know what he was bad at. We are all bad at several things.
It's good to keep these things in mind, whether it is for a restaurant or a tech startup.
He doesn't do simple math to figure out how much money he'll need, what runway he has, or what he should be charging for his food. He pays three grand to incorporate a business, when a Google search tells him it could be done for far less. When he gets the opportunity to work for a few months in a restaurant, he squanders it.
Sure, hindsight is twenty twenty, but a lot of these obstacles aren't hard to see coming. If you're going to gamble with your life savings, your friend's money, and your family's financial future, you should do the research and put the thought in to make sure you aren't throwing it all away.