Post the founding era of Newton and Max Planck, and long after Einstein, Planck, and Dirac, institutional researchers over the 130 years following Special Relativity have never meaningfully challenged curvable spacetime, despite the fact that spacetime itself has no inherent physical structure. ECM is not curvature-based, yet it reproduces all tested results correctly because λ is physical, T is abstract, with λ ∝ T. Treating T as physical to derive λ may yield the same numerical results, but the method is conceptually flawed, giving rise to the curved spacetime narrative. ECM achieves the same results without fabricating spacetime curvature, offering a physically consistent and transparent framework. Any argument against this that ignores ECM’s methodological distinction is therefore not tenable.