>This kind of article doesn't address the issue known as Chesterton's fence [1]. If so-called "low power" poses are so bad for you, why have they survived evolution?
That's not hard to explain: most of the selection power of evolution worked in the ancestral, hunters-n-gatherers environment, which covers most of the timespan when anatomically-modern humans lived. Selection modes changed significantly in the agricultural and industrial revolutions, but evolution works too slowly to align our biology ideally with the new environment (plus the local optimum problem).
Therefore, it's not uncommon for people to interpret their surroundings by the ancestral mind, even the basis for those "mental adaptations" no longer exist. Indeed, exploiting the difference is the basis for advertising and all other manners of social manipulation. And it's why Snickers bars taste so damn good but are so bad for you.
An especially relevant divergence on this topic is in meetings: the kind of things that were genetically optimal among a caveman tribe are very far from the processes that generate productive meeting outcomes. For example, your mind is constantly feeding you rationalizations for why something that happens to benefit you personally, will also benefit the group, even and especially when that is utterly false.
So ... I think the appropriate response to claims like the article's, on "Chestertonian" grounds, would be more along the lines of, "If this is so smart, why ain't you(r acolytes) rich?" That is, if people can easily switch to something so much more advantageous, why can't you just as easily prove it with working examples of people you've converted, rather than idly theorizing?