In general, I completely agree. Rarely do you find a study that's done on healthy humans without some preexisting medical condition. The test subjects are usually rats, mice or people with a medical condition that aren't responded to the current standard of care, whatever that may be.
The proviron study however was done on normal healthy male test subjects that were not taking exogenous testosterone injections. That's why many, myself included, jumped to the erroneous conclusion that Proviron was safe to use during PCT for preserving gains and enhancing libido function.