I think the consensus is the NRLW is the more stable option though and provides more opportunities for players to increase their earning capacity. They also have a clear growth plan over the next couple of years, establishing a professional domestic competition for women is likely more appealing in the long term than one international level touring squad.
I read somewhere the average NRLW player would be earning around $60k in 2022 based on contract value, win bonuses and incentives.
There are definitely some high earners in the Aussie 7s program. I believe Caslick is clocking up around $300k a year at the moment, but I think there would be daylight between her and the others. Whereas in the NRLW each team has two marquee spots where the players are also then employed by the NRL club in some capacity and that salary sits outside the cap.
Long story short, you can see why rugby players are going to NRLW, more opportunities for higher earning contracts. There would be girls in the current 7s squad who would realise they’re better off playing the numbers game and securing a spot in a competition with more available contracts long term.