Being ignorant of history leads to a lack of understanding the present - RL was built on allowing players to share in the funds of a club when the club was bringing in money off the work of the players. Obviously, we're not charging gate in Subbies so it's a moot point, but that's not the case everywhere else.
If you're a "rugby player", would you rather get paid around half of a full season's Subbies subs to play one game, or pay a few hundred to play 1 game of 4ths? If you're a tradie, would you be willing to risk weeks of pay and medical fees if you should get injured, or happily take some cash that's on offer?
I fully support the idea of "playing for the sake of playing" but I'm also not going to demonise players for choosing to take some money to play, so long as they're doing things by the rulebook of their sport.