This is very cool home engineering, and maybe I'm getting soft in my old age... but whenever I see something like this I have to wonder "why violence." I guess it's some inherent trait we have.
The ads are so obnoxious and unskippable that I prefer to close the tab even at the price of missing to watch educating and substantive content. No, I'm not going to buy Youtube Premium.
As someone who has carried a pocket knife for most of my life, I very rarely think of the knife as a weapon. When I was younger, me and my friends would throw knives at trees. Sometimes we would throw hatchets at trees. It's fun and very satisfying to finally stick the knife/hatchet.