Interesting article and I can't say I disagree. However, I can see our resident measurement-prone/dependent members jumping all over the last paragraphs.
BTW: Toronto is a hotbed for vinyl.....endless choices.
I'm pretty sure CD's and MP3's can't reproduce a 10 (or even 5) kHz square wave very well (nor can LP's, probably) but someone else can chime in with pictures.
It later crossed my mind that by "square waves" perhaps he was referring to the aggressive peak-limiting so common nowadays. So he might be saying that it takes what is essentially a flaw in LP reproduction (in the sense that it is not a perfect reproduction of the input signal) to partially ameliorate another flaw that he (as a mastering engineer) intentionally introduced into the recording
I can certainly understand the attraction of LP's, and I'm not surprised it's remained a strong niche product - the sound of a well setup system can be compelling. I once read a post by Stereophile's John Atkinson stating although the lows and highs on LP's have issues, the mid band was equivalent to high resolution (20-bits).
Although I've more than once considered adding a turntable to my system, the tinkering and maintenance involved with LP's has always discouraged me - I just want to actively listen to well reproduced music. I know the recording and mastering processes are by far the most important aspect of music reproduction. And although I do enjoy well sourced and mastered RBCD's, to my ear SACD's sound more open with more dynamic contrasts and air than RBCD. I've found many of the SACD's in my collection can also be quite compelling.
Unfortunately neither LP or SACD provides consumer availability to many artists/titles. Perhaps computer audio can ultimately bring the majority of listeners and music together by offering different sound resolution at specific price points for various devices.
Indeed, it's the kind of thing which makes me skeptical of the whole idea of people preferring LP's because they have better sound. I don't want to get into that discussion (again!), I'm just saying that the arguments put forth here don't hold water.