He’s on the right half of the spectrum (IMO), but at the extreme end of it - Bench and chins can’t build big arms. Kind of a stupid thing to say, but that dude says all sorts of dumb shit, and then freaks out when someone disagrees with them and goes straight for the “I’m so smart, you’re so dumb” attack. The funny thing is, I posted my disagreement with that (where I called what he said ‘silly’), and then the next thread I saw was the powerlifter vs bodybuilder thread and I agreed with what he said and liked his post, and he was like YOU SLANDER ME AT EVERY TURN, YOU FEEBLE-MINDED KNAVE. At the end of the day, dude’s puny, calls himself ‘big’ a lot but has one very unimpressive picture that was posted, and a year after posting it he made a thread claiming to have lost 15 lbs of muscle, which would constitute 95% of the mass he had in that picture.
You can work your arms with skulls, or you can work them with CGBP, or both, but you can’t tell me, the most arm-dominant person ever, that bench doesn’t build arms, because all bench ever hit was my tris, or that chins don’t build arms, because my biceps are literally 99% from high rep slightly-cheaty chins and weighted chins.
The notion that gripping a bar in a squat while your legs do all the lifting though, that’s something I can’t believe I bought into, but I did, 100%, for a time.