You both only covered a part of the problem and are not the reaching the core
I can only speak in terms of my current experience within the CRL / NSWRL at senior level and it is all down to funding and lack of volunteers to coach or help out at any club functions or duties.
Some clubs are thankful whoever is brave enough to put up their hand so you will get some lemons but someone has to do it.
To deal and appease parents these days to keep their kids in the game is a mammoth effort..a coach just does not get a chance to really coach properly with the "everyone has to be equal and a winner attitude" at some junior clubs.
The game does not have the same interest in some communities anymore and people and parents are spread thin with other sports or kids just want to "game" instead of sport.
And the amount of NRL driven admin / red tape and costs turns people away to be able to coach or just be on committees etc
The NRL channel too much money and focus on NRL. There is your big issue which has been causing a slow death of lower grades and a major problem right there.
No funding comes clubs way (little does for Juniors) from the NRL or CRL which is now is part of NSWRL
Clubs are doing it tough on the smell of an oily rag and it is hard to keep asking locals and community to put their hands in their pockets for sponsorship or buy raffle tickets every year as interests vary.
To get people to volunteer is hard enough and the kids these days (not all) but a lot of parents and players are reluctant to help as "too busy" or "too entitled"
It is not like that at every club but a lot.
Re the rules - Yes the wrestle in part has to be coached to mimic rules and NRL at (older junior) and senior levels but nowhere near the extent of the NRL as normal people are not that strong and fit and the NRL players practice that stuff as professionals.
We have coaches that go through the same drills and tackling techniques as we did back 20-40 yrs ago and some kids are just fine but some smaller kids dont adapt to the wrestle and some of their arm and pressure point pinning holds.
And there are kids playing the game that just are not suited... but we have to be all inclusive. Simple and fact.
But you are right on one point the Islander / Kiwi kids are naturally bigger than their Caucasian counterparts and that too turns parents away. But you can not have weight for age either..that too brings in other problems
But rule changes and sanitisation of the game at junior level has gone overboard and killing the game.
I think it is the QRL from this year will now have no tackling for any age group Under 12's or 13's
Wont be long for the NSWRL follow their lead
Now you know why there is limited skill and depth outside NRL and lack of genuine halves etc
Beggars belief and I sometimes ask..where is league heading and it is in part bleak
just look at all the competitions dwindling, amalgamating or falling apart at the seams below NRL level
But we keep going!