I kinda take the point about how low tee pegs might hurt poorer players, although the lessor player managed for decades when pegs were a lot shorter, and even when teeing-up was on a pinch of sand, and if someone is that poor a player, well I'm not sure much is gonna help them at all.
However, I don't think Dustin Johnson could have hit that 357 yd tee shot over the trees and corner on the 13th at ANGC last week with a very short tee peg.
The lower tee peg idea is meant to be simple method of undertaking rollback without the vast costs etc associated with new ball developments etc. I think its appropriateness has been raised before, particularly by Peter Thompson and Nick Faldo. I doubt it will work for years and years and years but as an intermin step in the period whilst formal discussions/agreements take place about revisions to ball specifications etc it is a potentially viable approach to adopt.
All the best.