That's not what he wrote. He's talking about hand-soldering (vs PCBs) and using certain components or technologies that work really well when marketing but have no effect or even a detrimental effect on sound. For example, people want Class A amps, not Class AB ones, even though the designation is purely a technical one and is not correlated with sound quality.

The difference between a tube amp and a solid state one, by the way, is one that you can objectively measure through spectrograms.