This article seems to have the right intent, but I felt the quality of the writing would need to improve for it to become truly useful for learners.
If you have any noise at all, oversampling will be very helpful to improve the signal to noise ratio.
I guess it could be useful in cases where you don't have bounds to work against.
This comes back to the poor writing, though, as I believe the author meant to indicate that the industry standard for sampling audio is 10x their cited sampling rate of 2000HZ in the text (though this is incorrect, too. Audio is sampled at 44100HZ because the general upper bound on hearing is 22000HZ, so by Nyquist's theorem, sampling at 44100 gives you enough range to avoid aliasing within the 0-22000 band).
what would Nyquist in amplitude, continuous in time look like? that's sort of a class D amplifier, and even sort of CVSD.