Yes this seems to pretty much be it.
Fans favor the era where their favorite runs were created or where their favorite characters were perceived to be at their best. There really is no non-biased way to look at where DC's continuity was at its most cohesive, because it pretty much always was a mess.
Like I expect a lot of JSA naturally prefer post-Crisis/Pre-Flashpoint because that is their preferred status quo for the team and their history, and view the entire DCU as being more cohesive because of it. Meanwhile, some Superman fans who get sick or origin reboots since COIE and his pre and post Crisis histories being at odds with each other are going to feel much differently about that era.