To me it doesn't really matter if we call something a dogleg or not. The goal is to create an angle of play. That can be done on a very straight hole. Granted, in this day and age, often times the effect of that angle can be negated more easily than a true dogleg. That said, modern doglegs often offer less options because they have set turning distances correlating to specific tees which in effect correlates to formulas regarding how far players hit the ball. For instance, the dogleg which makes the golfer hit a distance target in the fairway of be left (even if still in the fairway) stuffed behind trees if he then wants to have a go at the green. Some like this sort of distance control tee shot, I don't find it anymore interesting (hence the reason I dislike Woking's 9th tee shot) than hitting between bunkers - indeed the two shots are quite close in their nature of challenge.
I think if we look at the best holes, a very large percentage will move (or play) penny left (the temptation to skirt bunkers and other features is quite appealing on this sort of shot) or a penny right rather than full blown doglegs.
Ciao