Of course you are right J.Hall.
In fact, I love the kind of ambiguity that can happen the almost independent bass line you can create from 6/4 chords, or other "late" inversions. Especially when you mix everything with the whole idea of being pandiatonic or bitonal.
You're right though, but only from a compositional standpoint.
CPE theory is just strict in certain ways. Sorta. But you have the right idea.