Interesting? At my most generous, I might describe the article as mildly amusing - yes, perhaps even somewhat entertaining, but in my personal opinion (as always), not worth more than that.
This is probably not the right forum in which to pursue the discussion, but my personal experience is quite strongly counter to most (if perhaps not quite everything) he concludes.
For our purposes here, despite my adventures in hi-fi, I am not inclined to spend megabucks on cabling a bass rig (okay, even a guitar rig) for live performance. Personally, my threshold of diminishing returns would be just a little beyond Monster, maybe twice as much but not five times.
But in other contexts, I am personally convinced that there is much more going on here than this writer understands, or is sufficiently open-minded to even consider.
By all means, don't get sucked in by hype - either positive or negative. Trust your ears (and if your hearing is questionable, get a second opinion), then pay what it's worth to you.
-Bob