What is a common critique of Freud's theories regarding the development of personality?

Freud's theories on personality development, particularly his concepts of the id, ego, superego, and psychosexual stages, often face criticism for lacking empirical support. Empirical support refers to evidence that is based on observation or experiments that can be tested and verified. Many critics argue that Freud's theories are not easily testable and rely heavily on subjective interpretations of case studies rather than scientific data. This absence of empirical backing makes it challenging for researchers to validate his claims using modern psychological research methods. As a result, Freud's theories are often seen as more philosophical than scientifically rigorous, leading some in the psychological community to question their validity in understanding personality development.