Pretty much totally disagree. You can take all the parts piecemeal. You can use the underlying concepts of his model without buying the dubious narrative of the Oedipus complex. And you can say there's something that "rings true" about the Oedipus complex without interpreting it as a literal predictive theory, aka, accept it in part while rejecting it in the whole. Easily. It's a model, and taking it piecemeal can consist either of borrowing its nouns without its story, or taking part of its story but saying it's not the full picture, or not completely right, etc.