Author is 100% on point. The point of a polygraph is three-fold: weeding out the dipshits; exerting power over the powerless; and identifying the valuable assets (typically sociopaths). It does not - cannot - identify liars, deceit, or bad actors on its face (that comes from the manual the author linked). It's not scientific assessment, it's psychological torture.
Would I take a polygraph to reactivate my clearance? Yeah, if I had to. Would I pass? That's up to the examiner, because much like the author I won't tolerate being called a liar, nor will I capitulate to power games. I'll be honest, forthcoming, and cooperative - and if that's not enough to pass, then I don't want to work for you.