You still haven't answered the question; are you saying that none of this can occur without a body called the NSWCRU?
I'm going to leave this alone after this post because it's not really relevant to this thread.
But to answer your question, there needs to be a collective of people to organise these things, yes, or they won't happen. That collective happens to be called the NSW Country RU, just like it has been for the last 150 years or so. Why that should bother you or anyone else is beyond me.
Aside from the seniors team and comp there is also a similar structure for the colts and now for the women. There is also a representative team for every age group from the 13s up. Aren't you one that is meant to be pro development and participation of rugby? Who do you think is going to organise all this if NSWCRU don't? Your gripe seems to be that they no longer supply a schools team into whatever comp it is you are referring to, I don't know the reasons for that, but maybe they decided to leave that to the several bodies who already select representative schools sides. After all, who needs a separate body to select a team?
For the record, there is also a separate body for both the Queensland Country RU and NSW Suburban RU who these blokes play against. Why don't you have a go at them too? The Brumbies obviously don't need one for their 3 zones that they select their 'representative' team from.
In closing, and to give this some relevance to the thread, the 3 southern zones that defected to the Brumbies did so because they were told they would be feeder regions for the Brumbies. They probably saw that as having more upside than NSW Country. However to my knowledge there hasn't been a single player from these zones that has kitted up for the Brumbies senior team. There have been several NSW Country players for the Brumbies - Sam Carter (Quirindi), Rory Arnold (Murwillimbah), Josh Mann-Rea (Narromine), Joel Wilson (Mudgee) to name a few - but as you can see none of them come from the south.
I'm not having a go at the Brumbies here, on the contrary good on them for the developing them. If not for the existence of the Brumbies they may have been overlooked by the system. We need more, not less, professional options to capture all the players we can, otherwise they will be lost to Australian rugby.