I haven't chimed in on this one, but am a big advocate of Tee It Forward, and don't really see any arguments here that change my mind.
I am not sure of the exact percentage, but presume most recreational golfers are out there primarily for fun. Its more fun to hit greens with 9-4 irons than hit a lot of longer shots, or meaningless shots that don't hit the green.
So, to me, playing a fun yardage is about the only criteria to use. And as a theoretical advocate, I put into practice what I preach, moving up to anywhere from 6000-6300 yards from my usual 6800 and have the time of my life on the golf course. Sure, maybe its just me, but I doubt it.
As I like to tell it, I played with Tom Watson in the Vegas Pro Am in 1983 and nearly matched his distance, albeit from one tee up. If I played with Bubba Watson today, it would take me two or three tees up to match his distance. However, we have kept backing up yardage for pros that will never come to a newly minted golf course, stretching it longer for a generally aging golf population, thus reducing the fun of golf.
The math for Tee It forward is compelling. It should be done. Maybe it should be labeled something else, like "return to sanity/normalcy".