This is not accurate. It is just as bad to say pro-hormones don't work as it is when others say steroids are bad.
We are talking about many different substances in both cases. I am a big believer in steroids, but 90% of my consultation clients did a steroid cycle before coming to me, and signed up for my consultation service because their first anabolic steroid cycle sucked.
When someone makes poor gains on pro-hormones, they blame the manufacturer (who may or may not be at fault), but when someone has poor results on a steroid cycle, they usually out of embarrassment keep their mouth shut.