Yes, you are proffering the inside view, and I am proffering the outside view.

Let x = the circumstance one finds oneself in, and let y = the choice one makes. Define f() as the function that converts x into y. By definition y = f(x). I think that "morality" is just the label we apply to a particular person or group's f().

It is clearly true the BOURGEOIS(x) != COMMUNIST(x). But your position seems to be that COMMUNIST() cannot be labeled the "Communist morality" because they used the word "morality" exclusively to refer to BOURGEOIS() or FEUDALISM() (or whatever).

I'm not primarily interested in that assertion - instead, I'm asserting that Communists believed the function COMMUNIST() was validated by objective facts, external to any particular human mind. Likewise, I might assert that the Pope thinks CATHOLIC() is validated by objective facts, external to any particular human mind.