Of course they're not
Yes of course my feelings exactly, but if we extended the point that pleasures cannot be compared or ranked in any way at all, that would be the reduction to the absurd, so in my mind that proves that this cannot have been Epicurus' meaning.
This is off the top of my head, but if I'm not mistaken, the only mechanism that Epicurus gives for evaluating choices and avoidances is by categorizing desires.
Well there I would say that each reference goes in the direction of the purely practical: "What will happen to me if I make this choice?" So rather than "categorizing" which would be definitional logical analysis which might actually sound platonic, I would say he is emphasizing the reverse and say evaluate them pragmatically only by their results. And their results are not measured by categories but only by the resulting feeling. In that respect I see "natural and necessary" categories in that same way - strictly biological or feeling-driven, rather than by any intellectual categories.
VS71. "Every desire must be confronted by this question: What will happen to me if the object of my desire is accomplished, and what if it is not?"
This is getting interesting, digging into the weeds!
YES!!