This is NOT Curl in Square to Square....Some Say CR was Derived from Your Heroes Dark Side.......
I know see why you are saying tour pros do it and some don’t even know it. I have some golfer’s start at 3 degrees closed at address and add 2 to 3 degrees counter rotation during the back swing. I think we are talking about the same thing. You see it to the swing plane up to 45 degrees and I see it to the sweet spot path up to 6 degrees. The overall club face look is similar.