Who goes to a bow shop, or installs a peep in their string, and says " Let's put a peep in there so I can figure out my anchor point"
No one. You establish all of your anchor points THEN set your peep sight. The fact that it's a reference is from pure default. You seem to be stuck on it being THE FOCAL reference. It isn't. Conceded. Never said it was. In fact.....I'll say it again....it's the last thing I'd refer to. But..... It is "A" reference...........(and if it makes you feel better).....for me.
Oh yeah.....and Matt[8D]