I don't disagree with anything you say, but it seems to me there is a small group that should be an easier sell. I don't get why most ex-wrestlers have so little interest in following the sport.
Part may be that Olympic wrestling is a mostly unfamiliar sport to them and they do not have any understanding about FS so there is no momentum from an Olympic year carrying over into the development of the next generation of international wrestlers.
I agree about not knowing the rules and scoring of Olympic wrestlers for former wrestlers. That's what keeps non-wrestlers away from folkstyle so it is no surprise that it keeps folkstylers away from FS. This could be an opportunity for some people in the FS community to ask for a few minutes during breaks at folkstyle tournaments to get out their with microphones and wrestlers and teach the rules and scoring of FS. They could do it during breaks in HS tournaments as well as college tournaments. They could mention some wrestlers to watch for and what the big moves of each wrestler is. Basically, go to folkstyle tournaments and get those there to know and get interested in FS.