Why is this a disgrace?
Presumably Wigan are paying rent to Hemel so they win. Hopefully Hemel will give out free tickets to the participants, which may help them grow their gates. It may just encourage a few people from RU backgrounds to try the sport. In turn that may generate players for the likes of Hemel, who didn't run much in the way of youth set up last season, and St Albans.
The chances of someone of that age range commuting to Wigan for training are tiny. Unless a family re-locates any talent discovered is likely to bolster southern RL for the short to mid term at least. Beyond that, anyone willing to relocate is likely to sign for Wigan Academy over any southern academy anyway, irrespective of where they were discovered.
Anything that gets youngsters playing RL down south will assist the southern RL system. As the apex of that system Broncos could potentially do quite nicely out of any expansion in southern talent base. The known issues with persuading people to move south make such development even more important.