What I am implying is that there should have been more than one martial warrior class, more than one monk class, More than one roguish expert class, etc etc.That is not more accurate at all. There is a fighter class defined in the PHB. Being meaningless (if that were true) is irrelevant to that observation.
What you imply here is you would prefer some of the subclass mechanics were in the class itself. That is fine, but it is fundamentally different than saying there is no fighter class.
Each of them exploring different styles of martials fully.
Instead what we got is something like when WOTC attempted to jam the Wizard Sorcerer Warlock and Psion, Artificer into one big Mage class.