In this instance, yes, as fundamentally, rugby league is a sport first and foremost, a hobby they chose to start playing long before they had an option to earn a crust from it. It’s voluntary, it’s something they chose to do non-professionally, and happened to be good enough to end up being paid for it. It’s not a ‘job’ that anyone can apply for.
If professional players are entitled to compensation for this, then why shouldn’t every single amateur player who suffers the same fate be entitled to exactly the same.
Sport always starts out as a hobby - the line must be drawn that this is a dangerous hobby (like surfing, rock climbing, combat sports, sky diving), it comes with known risks, so whether you CHOOSE to play the game as an amateur, or professionally, you know that risk and have the choice whether or not to accept it and play. The fact some people get paid for it should be irrelevant, otherwise professional contact sport cannot exist.