Its an interesting take on old-school point-to-point wiring using turrets:

https://en.wikipedia.org/wiki/Point-to-point_construction

https://entertaininghacks.wordpress.com/2020/07/22/prototypi...

I assume the author liked the idea and used the perfbaord/punchboard as a grid.

I have plenty of PoCs that were built from whatever lumber I happened to have available. It's much faster than waiting for something to 3D print. A DIYer's garage without scraps of various cuts of lumber is just broken.

Honestly I really like the low tech steampunk? kind of vibe of nails in a board.