That was my question also. How many South West juniors debuted for anyone at all? It may be a an overall lack of talent in the region that is the cause of the stat, which then opens up a very broad argument not only about Wests Tigers investment in Macarthur juniors, but rugby league's prospects in the region overall.
The junior district stats from, I think it was 2018, showed that Balmain and Magpies have about the same number of juniors, and both dwarfed by the numbers fielded at Penrith. That may be a Magpies / WT issue, or it may be an issue with the demographics of the region itself.
Also - it may reflect an intentional change of strategy over time. The first 75 players to debut for Wests Tigers probably all occurred before the 2005 GF, and many of them were inherited from the Magpies, i.e. were part of the merger deal. The last 75 debutants would be up to 20 years removed from those first 75, reflecting a potentially very different recruitment and development strategy.
All my thoughts mate - I don't know the stats, But I'll bet there's more kids (with population growth) But less of a percentage of them playing Rugby League.
For many reasons - The least of them being Wests Tigers involvement in the area....
In fact, I don't believe that's a reason at all.