I've tried to clarify that my opinion of vertical hand path never meant 90 degrees to the ground. Although there are plenty of guys that let their hands go straight down initially before out. I will say this, a mini carry is certainly not optimal.
Alright, so there's really not massive disagreement here.
I will say, though, that Tseng, Garrigus and Hogan all feature or featured initial hand paths that are way more horizontal than those of most professional golfers. And I'd call that "optimal" or at least one kind of "optimal."