From the pictures the ship looks awfully small compared to container ships. I wonder whether the economics will work out for them.
Also, this is a prototype and effectively a research platform. And if you are going to build with wood, there are not many contemporary designs floating around. Starting with a proven design may be a good idea.
The ships and crews are expensive. Any time they aren't moving they aren't making money. Isn't the whole point of shipping containers that you can buffer them up and then rapidly load them onto a ship once it arrives?