it all comes done to simple "besieged fortress" mentality
both sides hae the same fear - that one of version of game will negatively effect other .
you can see it in milion of threads about "retailers go to retail with your min max attitude" in classic forums and you can read it as fear between the lines of "unpruning" in 9.0
im quite certain there are atm milions of people perfeckly happy with how BfA systems look like , just like there are hundreds of thousands of people in classic who are happy with systems in classic.
those people will never agree with each other becaue they look for something fundamentaly different in game
one crowd look for deep rpg experience with super easy content because complexity comes from time invested into obtaining max level and gear but raids are ultra easy modes , the other looks for action-frogger-rpg with very basic talent / gear obtaining systems because for them complexity comes in form of difficult encounters in raids
those people will never agree with each other.