I mean, for the most part, he's not wrong. Ford stole the valve layout of the BBC for the Cleveland, and their new pushrod big block looks eerily similar to the LS architecture. Fix on race day.
I can't say I agree that Ford stole the valve layout from the BBC for the Cleveland. There's only so many ways to build a OHV V8. There are other engines that have run canted valves before the Chevy BB. Mopar had their Poly head 318 from '57 to '66. While the exhaust valve was vertical, the intake valve was canted. The Hemi even had / has canted valves, but they're arranged a little different because of the overall combustion chamber.
A long time ago, a "Chevy guy" friend of mine use to say Chrysler stole the SBC architecture for the Mopar small block (LA) engine. He was trying to "dig" me because my little 340 Cuda was so fast, essentially claiming it had a SBC (of sorts) in it. That little LA block is virtually an A block (from '57) with a couple of minor changes.
As long as a company doesn't infringe on another's patent, I, for the most part, don't consider it a copy.
Plus, I think it's more the sanctioning body that penalizes to keep any one manufacturer from running away with the prize money all the time. The racers have to be close enough in competition to keep the fans coming back and rooting for their favorite. The Hemi head design is just plain superior to any other, and unless they get penalized, they will always win. It would get pretty boring for everyone if you already know who is going to win the race before it is even contested, even for the Mopar fans.
It's all about the money don't cha know...it's all about the money.