The techniques you refer to (SERM based PCT) have been not only proven over time (which is proof enough really), but in medical journals detailing the actions of SERM's (and HCG) on the HPTA in hypergonadal men.
Turbo is pointing out that the protocol by Poloquin is not as researched as SERM protocols. Even if the research is only 10-20 years of bodybuilder's experiences and the natural evolution of that information, further increasing the recovery capabilities of the drug.
If a theory holds up to the test of time - then that is good enough by my reckoning, but if you also need medical papers to 'prove' the effect SERM's have on the HPTA in hypergonadal men, then that exists too.
You cant argue that SERM PCT protocols have no proof.. it simply is not correct.