Wire management.
I clicked on the channel to get some background and only see shorts and a single full length video about knife sharpening. Am I missing something?
I don't think so. I think it's just a regular dude with a very specific hobby and not a professional YouTuber. Maybe he just streams?
I do this, too on my hobby projects. Back when Twitter was still usable one post like this (only pictures) suddenly had 14k interactions. Until then I didn't even realize people can be into wire management.