Funny, I just watched that like an hour before I saw your post. I really dig the stealth camper style. I've been wracking my brain trying to think of ingenious storage solutions for my new 4R, and his build gave me some ideas (like the little webbed cargo pockets, and the 80/20 on the roof interior).
It’s cool. I can see why it’s so called “minimalist” because visually he doesn’t have the roof rack and camper up top. Instead he compensate for a solar panels.