This is nowhere near as sophisticated as a hurdy gurdy.
More like "cool but you made a more polished version of the stuff we used to build at band practice when I was 16."
This is fine but it's just a spring reverb, a couple diddley bows and the giant mbira my friend Tim made out of scrap aluminum in 10th grade, all stuck together. I've got literally dozens of cassette tapes o us doing stuff like this back then.
Nothing wrong with it but nothing even vaguely unusual.
If I wanted to be a self aggrandizing dick I'd talk about building this in my living room for about $300 using mostly hand tools and 19th century woodworking techniques, including hand winding the pickups on a pickup winder I designed and built, hand rubbed the finish with no sanding using a hybrid shellac/varnish method I came up with on the spot, and didn't do any design work or planning other than the dimensions of the neck, so nailing some metal to a board doesn't really impress me.
https://imgur.com/V15jiOt
BUT I will say that he plays it pretty well, so that's cool.