JC-
I think you are roughly right; in part this inevitable as the JFKA recedes into the past. The people who really care about the JFKA, and even the larger topic of that fascinating period of history, are dying off.
The Education Forum had some action until recently, but has become inhospitable after inexplicably elevating one of its most TDS-ish, rigid and annoying members to become a moderator, resulting in about a dozen or so regular or frequent participants to slack off (or get banned). There is a smaller number of regular participants left, one obsessed with Nazis and another with the sex lives of pols and LBJ (and Jews).
Some JFKA commentators, in their Substack or other forums, are so desperate for readers they go to TDS or anti-Semitic tropes to garner eyeballs rather than the JFKA. Unfortunately, this is also rife inside the Ed Forum. Jeff Morley took to the Tucker Carlson show to dogwhistle "Mossad did it."
So, the JFKA research community is dwindling, and some are sinking into the bile they exude.
I still hold it is plausible that LHO had confederates, based upon my layman's read on the Z-film (JBC shot at Z-295 and JFK at Z-313).
Caveat emptorr, and draw your own conclusions.
The JFKA remains an interesting topic for me, but I am also an old man, and who knows how many moons are left.