The NRL, the AFL have a way of advertising the game at schools and at junior levels Aus Kick clinics and the like to support the growth of the game at a grassroots level. What does RA do for that? Little to nothing, if you don't go to a private school or have rugby parents you'll likely end up playing League or AFL (Or even worse soccer).
RA don't assist the club level of rugby in the slightest. To promote rugby what did they do? They made the NRC yeah great teams literally no one gives a **** about that have no history. If they wanted to assist the growth of the game they would have made an effort to combine the Shute Shield with Brisbane Premier Rugby, had teams with history and already established fans, playing on a somewhat national level. That'd garner far more interest than the NRC.
Getting professional players back to club rugby after the season, giving fans an incentive to support their local clubs would do far more than securing talents from 18 and 19's (who are likely more heavily invested in league but face a more difficult pathway to the professionals than in union) that then leave to play for the Broncos after two seasons of Super Rugby.
Would twiggy fix anything like that? probably not. So I'll concede on the Twiggy issue is a hypothetical great hope that would probably end up being a failure anyway.
But Rugby Australia do not support club rugby like they should. Maybe it's different in NSW but it certainly isn't here in Queensland.