I think that dude lives in a van somewhere in UK so everything is powered through some powerbank in the van. Plus having several different hardwares that all has to occupy less space as possible.
Also, he states that "he doesn't love laptops", because having peripherals he didn't choose are redundant. I believe that's a somewhat distorted and carried-on trauma with laptops with subpar input devices and screens.
While I respect his choices and understand where he's coming from, in my opinion he has to change some perspectives and throw away some prejudices like he did for his belonging to fit into that caravan.
Emotional minimalism and throwing away expired things from our mindset is very beneficial for us.