I haven't played PB (so Patrick Mucci can stop reading now) but from what I gather of #8 it seems to me like everyone saying it is all about the second shot is missing an important factor in what makes the hole challenging.
If it were a par 3 where you hit over the ravine to the green it wouldn't be regarded all that highly. Yeah, it'd be scenic and the green would still be small and tough to putt, but par 3s of 180-200 yards where you have to carry a ravine or water hazard or whatever are on every other course in the land.
No, what makes it challenging, at least in my mind, is that you have to successfully execute your tee shot just to get into that nice position where you'd be if it were a par 3. The fact that most of us don't always hit our tee shots where we want will often leave us with a longer second shot, with a worse angle and perhaps with a less than ideal stance. Its like taking that par 3 and tossing the ball 30 yards off to the side and behind the teebox.
This is the kind of thing that drives me crazy if I play a great course only once. There are some holes where the proper experience of the hole depends on getting it off to a good start!
If/when I play PB, if I screw up my drive on #8 I'm going to drop a ball in the area where I was trying to place my drive, just to see what that shot is like. Likewise, if I'm ever fortunate enough to have a chance to play CPC, after I hit my shot at 16 at the green, I'm going to play another ball and try to lay up, because I still think from the photos I've seen that hitting that layup area looks a hell a lot more difficult to me than hitting at the green and keeping it out of the ocean!