I think you are making a grave mistake painting these groups and specifically that one in this light. It does indeed come across as very elitist.
I just took a look at that page just now and the top 20 or so posts are ALL posts you'd have seen on this site over the years. I feel less so today, and all of those posters could be considered potential hard course skiers or your target demographic
Growth in this sport is going to come from those people, not the few posters remaining on this forum, anecdotally at least I feel content and contribution is way down (from someone who's been on here since about day 1).
I can't stand social media, I basically only use it for waterskiing content, it's imperative for the growth and future of the sport to be utilizing it, as you noted TV is out, print is out. What's next?