JC-
Yes, for better or worse, the JFKA research community is now largely a group of balding and greying buffs, if they are still above ground. That includes me (still topside).
I concur with you, that most of the lay public gleans what they know of the JFKA from popular media or one article or book they read.
Platforms like "X" or Instagram and Youtube, even TikTok, are influential.
Worse, serious offshore money is being poured into those platforms.