This same question of a particular branch of this hobby "dying out" is debated around many different campfires. What I mean is that this same issue lies within the Civil War reenacting world, Old West reenacting, Mountain Man Rendezvous, WWII reenacting, etc.......... There are only so many individuals with interest in history (I include all the above mentions branches in this) and these hobbies tend to go in cycles based whatever movie is currently a hit. When it is cool to shot old guns, the kids go to shoots with mom & dad. Somewhere around 17-18, the hormones kick in or college and/or the the military takes them from the hobby. This leads to the gap of 25-40ish participants until their lives and financial situation stablizes. Thats about the age when your kids go away, you have time and now, money, to pick up where you left off. This leads to the abundance of 50+ slightly overweight graybearded cowboy, soldiers and mountain men. Throw in the current financial pressure on all these hobbies and here we are. Will CAS die out? No. Will it be how it was 10-20 years ago, Nope. That is life and the changes therein. The measure of a man is how you deal with these changes.
I remain, respectfully,