AZ: You said “The ONLY thing that was ever said in the name of 70 R”Y is EXACTLY what was published in their name with their very own signatures.”
However, the original ad about the game changing plans and letters in defense of it that came out in the ensuing days, DID claim that the roshei yeshiva were on board for the program. See http://www.theyeshivaworld.com/article.php?p=107721
among other places.
It is well known that many roshei yeshiva who signed were only signing on the concept that one should not feel badly about dating a girl of your own age or older. They never meant to force people not to date younger girls. The proof is in the amount of those same roshei yeshiva who have actually done those kind of shidduchim with their own children since the letter was signed.
They also never signed on the over the top monetizing of the entiore process, by forcing people to pay many thousands that they don’t have up front for nothing more than a name on a list. Did they agree to quadrupling and more of shadchanim fees?