As someone who grew up in a small country town absolutely and totally disagree with this. Having two Rugby League teams from the other premier sporting competition in this country appearing in your local region is a no-brainer in kick starting not only an interest in the code but possibly even getting comp`s up off the ground, especially at kids level.
What better way for a W.A. team to introduce itself around the state by playing trial matchers in regional areas.
Tell me, how many times did you pay to attend the local team in your country town? Were you ever a paying member or the equivalent of the time? How much did you invest in merch?
In my experience 99% of the time Country RL fans answers to all these questions will be zero or near enough to it that it doesn't matter, and in reality that's the biggest issue that country football faces. Country RL fans are too busy following, and spending money on, the NRL to even notice that their lack of support for local clubs is the biggest contributing factor in country RL's slow death, and expect some outside force to be willing to come in and fix all their problems for them.
Football clubs can't survive without money, and local clubs and leagues will continue to struggle and die until a sustainable way is found to draw as much investment into them on the ground in these towns and regions as possible. The only realistic way of doing that in the vast majority of cases is finding ways to modernise and commercialise them as businesses. But that only works if people are willing to patronise those businesses, which, for multiple reasons, isn't the case ATM.
Expecting the NRL and NRL clubs to be able to take up this burden by themselves is, frankly, moronically stupid. Even if all the NRL clubs played all their games in different venues across just country NSW it still wouldn't be enough to even come close to meeting market coverage, and you'd end up exacerbating the problem you have now with it where (though you'll pretend it isn't the case) the NRL effectively becomes the equivalent of a traveling circus in these towns; the biggest deal in town for a weekend, effectively irrelevant for the rest of the year.
Forcing those country clubs to have to compete with that NRL traveling circus is just kicking them while they're down as well, as it draws even more eyes and money away from them and towards the NRL.