He's specifically addressing people who have the same goals as him but aren't seeing progress for the reasons he's listed. Nothing in the article suggests that he sees other goals as less valid, and it seems like you're being uncharitable because he reads as a "bro" to you ("swollen muscles").

The article is obviously targeted at people who try to build muscle by lifting weights, not yoga practitioners.

Overcompensating is a word that comes immediately to mind...

I believe the author in the article just enjoys pain:

"Some of the happiest moments I remember are from walking home after a new 20-rep squat record way back in the days. Walking up stairs was like being repeatedly stabbed with a blunt and rusty butterknife. But it was still pure bliss."

Also, he seems to lack the usual mentality:

"I hate to bust your bubble lil’ buddy, but women don’t give a shit beyond a guy looking reasonably fit. Lower than 10-12% body fat won’t make an ounce of a difference. If women is your main motivation for dieting, don’t bother getting shredded."

My guess would be that this guy always wanted to be a cinema-style military drill instructor. And now he's doing just that as a freelance fitness coach: "I work as a nutritional consultant [..] and personal trainer."

>Also, he seems to lack the usual mentality

People on the outside generally think that the main motivation for lifting is about women but from inside the community it's an often joked about fact of life that guys are much more likely to appreciate your physique than girls.

Many years ago, the National Lampoon guys brought out some magazine parodies. I think that it was the Newsweek take off that recast the Soloflex ad as Cruciflex, with the motto: No pain, no gain. But then you discovered it was the pain you really wanted.