You don't need to understand how neurons work in detail to be able to use them to do something. In the past, we were able to use electricity for various purposes without knowing about electrons.

But my point is: have we really reached a technological level where we can use neurons like replaceable car parts? That video seems to suggest yes, but I’m still skeptical.

My impression is that this company is offering a product that’s still beyond our technological capabilities, much like the cold‑fusion startups that pop up from time to time.