Like you I have been studying this for a long time.
The old timers—Richard Dolan, Jacques Vallee, Leonard Stringfield, the late Stanton Friedman—played it straight—trying to figure out what is going on without pushing a specific agenda.
The newer “disclosure” breed (plus the old time grifter Greer) give me a bad case of the creeps. They seem to have agendas and jump to conclusions based on maximum hype, minimal evidence and circular reporting of each other.
When folks like Elizondo make extreme claims and then whine “national security” whenever asked to provide actual evidence it gets to be high comedy.
Me too! Greer seems almost insane to me.
I started looking into this in the mid 1970s while working at the Marshall Space Flight Center in Huntsville. The incident that sparked my interest was the two fishermen who got abducted at a lake near Tuscaloosa. It hit me like a hammer blow when the NASA people and contractors took it seriously.
Soon after that I learned about Betty and Barney Hill. It was a cascade after that. You can only learn superficial things. The real information is kept "tight as a tick", as the NASA guys said.
I think Dolan has been seduced by the Elizondo/CIA agenda. Shame. He used to be a lot more skeptical. At least he never bought into the blue chickens.