John:
You are precisely correct. In his interview with Peter Kessler at the US Open, David Fay steted that there must be room for improvemt in golf- in equipment, architecture, maintenance, all aspects, otherwise the game would be stagnant.
Someone a month or so on a different thread nade the statement that the USGA has "relaxed" the equipment rules. Nothing could be further from the truth. In fact, the rules have been enforced more closely (putter grips in 1987) or placed limits where there were none before (ODS, COR, MOI, club length, etc.)
Of course the manufacturers are always trying to find ways to get an advantage on the competition within the rules. Noone, not even the USGA, can predict what the next advance might be. With the exception of the short lived experiment by Callaway and a few others, all these advances have been accomplished within the rules. As Fay points out, that's not always a bad thing.
I raised the question about Popa calling the USGA liars for rhetorical reasons. I don't think that is what he was saying. The USGA uses the TOur statistics as part of its analysis, for cryin' out loud. So there is another question that must be pondered, which Bryan Izatt brought up.