Most of the places selling these files don't include disclaimers about how the additional quality is only useful in studio conditions -- they use it as a differentiator in the marketplace for end listeners. The article does mention the need for higher quality in production environments:

> Also, there are (and always will be) reasons to use more than 16 bits in recording and production.

> None of that is relevant to playback; here 24 bit audio is as useless as 192kHz sampling. The good news is that at least 24 bit depth doesn't harm fidelity. It just doesn't help, and also wastes space.