I just bought a food truck (literally 24 hours ago) and while I am as new as it gets in the industry what I have learned so far is in line with this article.
We looked into starting a restaurant or event just a commercial kitchen to do catering out of. After much research and searching for a location we changed direction and went with a food truck.
The food truck has several advantages to us. Overall the cost is much cheaper. Also if we were to buy or rent a building and put money into building a kitchen that would be a sunk cost that we could never get back. If we outgrow the truck or decide this isn't the business for us we can sell the truck and get our money back.
A lot of the work does go into figuring out the health department stuff. Ohio is a lot more friendly than some other states but is still an area we have to dedicate a significant amount of attention to.