This is complete BS. Anyone who would make such an absolute statement like this, especially over something so subjective, is simply informing you of their own particular bias and lack of knowledge or experience. People say the same type of holier-than-thou pronouncements about vinyl vs. digital, tube vs. solid state, balanced vs. single-ended, cone vs. horn vs. planar, etc. etc. etc. Ultimately, it is all subjective and at the very high end, the differences are mostly subtle and rarely earth-shattering.
At RMAF, I heard digital servers with solid state amps that sounded beautifully smooth, liquid and "analog"; while I heard some vinyl/tube setups that sounded harsh and edgy. And these were all high end expensive components. Setup and room acoustics matters most, and then the synergy with which your components match together is next.