There's another channel called kiwami japan about a guy who mostly is making knives out of things or other silly metal crafts. He also doesn't talk in most of them. I think the sound of banging wood or polishing metal is just very relaxing.

Yes, I think that is the main reason people enjoy his videos. I remember him stating somewhere, that he wanted to make this type of videos, because when he watches instructional videos, he always skips to the part where things are shown (and there is no talking).

Agreed. Very refreshing that he's not engaging in that parasocial stuff that most Youtubers do. He let's his videos do the talking. And none of that "don't forget to like, subscribe, and write a question or comment below" mantra that everyone else nags about. Drives me crazy.

Just when we finally got rid of the useless "Press Escape to exit fullscreen" nag...