I like this part of the voluminous description, buried pretty far down the page:
"Crafted this as an April Fools' joke 2021. I yield the massive tonal improvements heard when engaging the Aural Excitement circuit of various guitars with this strap installed, may possibly be mostly due to a placebo effect."
And this part near the end:
"Tone is subjective. You or your audience may or may not hear any audible or measurable difference arising from use of the PerfecTONE strap."
But for $844, could be worth a shot?