If so many studies call PCT into question, why does everyone here still do it?

[ronnie-eats-burgers]

Particularly interested in this forum's response to the HAARLEM study where testosterone levels were similar 3 months after cessation of AAS use in those who did and did not perform PCT. Link.
Other studies are softer, and just claim that PCT is still a largely unproven strategy. Link.

At what point do the side effects from Clomid/Nolva (headahces, vision especially, fatigue, etc.), just not justify making the risk for someone that's still so tentative.
Am I missing something here? Can someone who's better at reading this stuff than I am explain the schism: why is the scientific community so skeptical of PCT benefits, yet it still remains as gospel here? What do we know that they don't?