You are saying that maybe, possibly, if conditions were just right, Rubin's statement would not entirely be incorrect. He statement was completely false due to his reason for newbies having a better time at the 6:5 game. Because the pros stay away? Like that matters.
In the real world there are always better options to 6:5. I have not heard of a town where the BJ conditions are so bad that a newbie should resort to 6:5. Even if 6:5 was the only game that existed, a newbie would be better off checking out other games in the casino rather than playing 6:5 BJ. There are plenty of other games that will take far less money per hour. There is simply no reason to ever play 6:5, for a gambler or a counter.
The bottom line is that Rubin made an incorrect statement. Since he is apparantly educated in the ways of BJ one could assume he sold out. But...he could be getting senile. You never know.