What a fantastic website.
Probably a difference in human and emotional education. Times were slightly rougher in the 60-80s.. people may have had thicker skin and more social skills.
All in all it might just be a natural cycle of sclerosis, not help by the internet amplifier.
ps YouTube suggested some letterman shows with meg parsont (a random employee working in front of the studio building) I felt Dave was a bit intrusive if not bullish on her. Made me feel conflicted, as I hold the dude and show very high in mind.