I tend to agree with Vince. There are WAY MORE carvers out there than many are aware of. The ones I know are all very content to carve birds, hunt and basically stay out of the light. They are not interested in clubs, shows, and contest. They do some very fine work but just aren't into showing it off. They pbooty along the hobby of carving to friends and family that show interest.
I don't think there is any fear of it disappearing. Again Vince mentioned modern technology. I personally do not have any reason to go to shows anymore like I used to. I can get all the info I need from the computer know. I few clicks on here or dial a phone number and I'm communicating with George, my brother, Modin, Matus, Costilow, or whoever...and discussing techniques, paint, pattern development, etc. I will say I miss seeing some friends and just sitting around catching up on life.
AS far as pbootying it along I think that's being done a lot also. I know there are several groups of people that get together regularly to carve, they have clbootyes, and many are youth based. I personally will start some clbootyes with the youth in the church this fall. The majority if not all of these carvers will never post on the internet or go to a show.
I imagine the hobby of carving is much better off than many of us think.