Not really. It's predominantly collision sports that this applies to. I provided the link to playing numbers, here are more specific, in England over the last 10 years,
Association football up 8.75% to 1.8 million participants
http://www.telegraph.co.uk/sport/2017/02/15/popular-sport-england/football/
Cycling up 15.7% to 1.9 million participants
http://www.telegraph.co.uk/sport/2017/02/15/popular-sport-england/cycling/
Athletics up 31.5% to 2.2 million participants
http://www.telegraph.co.uk/sport/2017/02/15/popular-sport-england/athletics/
Rugby league down 39% to 44,900 participants
http://www.telegraph.co.uk/sport/2017/02/15/popular-sport-england/rugby-league/
In Australia, "Football was streets ahead of its nearest rival, with 1.086 million players. Golf (685,732) was second, followed by Australian rules football (635,627) and netball (625,721) while cricket was sixth and rugby union did not feature at all."
http://thenewdaily.com.au/sport/football/2016/12/08/most-popular-sport-in-australia/
As I mentioned previously though I'm not really concerned with the numbers playing RL as the sport will always be very strong in the heartlands. It's so deeply entrenched in the culture that I can't see anything endangering it. Wigan, St Helens, Castleford, Widnes etc, these places live for Rugby league. When you say these places to people the first thing they think of is the sport. We have 30 pro teams and just over 1000 players that make a living from the sport here, as Phil Caplan states, so we are still pretty healthy even with those numbers that play it.