On top of being an evil person, Money was quite wrong about gender — not only making intersex mutilation a thing, but also forcibly transitioning a young cis boy in one of the most heartbreaking cases I've ever read about.
The modern scientific model is a collaborative effort by many professionals across several fields, refined over several decades. There is no single scientist who is responsible for it. Instead of projecting cis insecurities, it centers trans people and treats us as honest conveyors of our experiences. And it sure is more correct than anything a bunch of illiterate fundies who beat their wives ever dreamed up.