Other sports don't let countries that fundamentally don't play their sport to walk into their biggest events.
You obviously haven't seen the RWC, when it was played in Australia I remember one of the teams donating gear to Uruguay because all the players couldn't afford their own equipment and had to miss work for a couple of months to play.Other teams like Romania, Georgia, Namibia etc all played, I think Australia beat Georgia 142-0, there was other games with over 100 scored and heaps with over 50 scored. Yet they still market it as the 3rd biggest event on the planet and nobody questions it.
Rugby League on the other hand manages to make decent competitive teams utilizing the same rules as all the other sports and its not the general public chastising us, but actually our own supporters. People just need to sit back and enjoy a game of footy for a change instead of trying to find ways to criticize, you might surprise yourself and find its actually enjoyable.