BCS theory has been claimed to be disproven, yet it continues to be utilized for explaining superconductivity, particularly in conventional materials. The discussion highlights the challenges of applying BCS theory to high-temperature superconductors, but it does not invalidate its relevance in simpler cases. Critics argue that the assertion of BCS being disproven lacks justification and emphasize the theory's ongoing applicability and extensions, such as in the context of Fermionic condensation. The conversation suggests that a deeper understanding of BCS theory is necessary to appreciate its current status in physics. Overall, BCS theory remains a significant framework in the study of superconductivity despite ongoing debates.