It does explain exactly that.
And why generally science goes into journals that peer review them, to catch "mistakes" like that. But as they could not get into any of the papers that would do so, it's published in something which does not require peer reviews, just posted without question.
Peer review is not some super high bar, it's science 101. Science standard, do you remember that thing, where 96% of trans supportive studies were rejected for supposedly not meeting that super high bar set in Cass review?
This does not even close first of dozen plus hurdles. But suddenly as it fits your narrative, that doesn't matter anymore. Neither did other anti-trans studies used in Cass, but that's another story.