I think you misunderstand.
The statement was meant to illustrate that the majority of people who experience side effects from the drugs and then quit the drug will see a resolution of their symptoms within a few weeks or months after quitting.
Regardless of what we see and read on this forum, it is still the truth that most people who use 5ari-substances do not experience side effects and that for most of them that do, the symptoms fade (weeks, months, a year) after quitting the drug. If everyone who took these substances got hit by PFS, this would be a very, very crowded place, but it’s not.
In other words, if we consider ‘persistent symptoms’ as a prerequisite for what we call “PFS”, then those patients who experience permanent resolution of their symptoms in a few weeks, or months, or one year, after quitting… might simply not be actual PFS patients to begin with, or at least, not be in need of any treatment since it will pass with time.
So the timeframe is an important thing to consider before we attach too much credence on a person’s alleged methods for recovery (such as those from OP). I think that was the point of MC’s remark.
Also the rarity of the condition is not an indication of how bad the problem is. The severity of the condition for an individual should be the indication of how bad the problem is.