Oh I’ve seen buildshow. I have also seen him talking about mistakes he made in the older designs he had. I would be real cautious about letting a builder at a lower tier than him beta test their ideas on moisture control inside my walls when I’m the test dummy inside.
The building trade and construction is filled with nerds, amazing products, cheats and snake oil... so just like tech but less VC'c.
https://en.wikipedia.org/wiki/Building_science building nerds are on point and doing all kinds of cool stuff. If you want the modern version of bob villa this old house is probably this: https://www.youtube.com/@buildshow . It will give you some clues as to what is going on in modern construction.