I think that being optimistic and being reckless and careless are two different things and from what you have described in this scenario without having a back up plan and without having a business plan as well this is likely to be considered to be more of a reckless act and is not the recipe for success in my opinion. By the way how is he putting up the collateral for the loan? What is he taking the loan against?
Yes you are correct, he is being reckless. As for the loan, he used a piece of land he inherited as collateral, he was also required to provide a guarantor, and he chose his mom for that. The loan is still being processed, he can back out now which is why I'm trying to talk sense into him. A landed property is on the line here, not to mention the problems his mom will face if things go south.