I read that Peter White article when fretting over the set up for my audax bike. Prior to then, I'd been reading various theories and opinions over what was the best, taking measurements and performing calculations... and just getting more confused. I even had a professional fitting done.
I found I was either getting contradictory opinions or results that I couldn't translate onto my bike, for whatever reason. It seemed all about achieving a mythical 'best' position without regard to me or my bike. I recall now reaching a point where I just said 'sod it' and began to experiment, making changes that felt right (but noting the previous position as a base) based on nothing more than where I felt I wanted to be on the bike. If I didn't feel comfortable after,say, 30 minutes of riding then I'd visualise the position I felt I wanted and try and get to that. As I couldn't play much with the bars that meant the saddle and cleat position.
As a consequence, each of my bikes is different. Saddle height and fore-aft varies on each (not by much, for sure, but none-the-less different). In fact, when I changed to a Brooks saddle (on my audax bike) I recall that I found a slightly lower position to be more comfortable than on the original San Marco Rolls! I'm pretty sure Peter White set me on that path of self-discovery since I recognised his words when I read them just now, and recall the effect they had on me. No 2 riders are alike, and nobody can tell you where you'll feel comfortable, so you have to feel confident to start at a position and tinker.