The driver line is drawn too steep imho you can tell by looking at the bottom of the line it appears to be on the shirt and a little high especially when compared to the 7 iron line. Of course the author has a point to prove so he might be slightly biased. Fortunately I would never do anything like that!
As for literalist point of view
yep that is true, Peter sometimes comes up with some odd points but he is usually correct in what he says from a literalist point of view
anyway... He seems to craft his statements in a way that can cause a reaction based on something that you or I might infer from his statement when in fact he is not really saying what we might think he is saying. I don't know if this intentional but it does create some spirited conversation.