-
That's a fair critique, but one that can realistically be applied to pretty much anything outside of academic journals. For what it's worth places like MPMD regularly cite scientific studies. Obviously there's the old "you can prove anything with facts" thing with that, but it's worth noting.
And the point of the original mention is that no matter whether it's 100% legit, or seemingly good information not being distinguishable from actual good information, it's still leaps and bounds ahead of 20 years ago in terms of availability of information which can contribute to people's openness to hopping on cycle. Whether legitimately or not they can feel like they have researched it well in a way that was not really easy to do historically.
I think if people want to get good balanced information about gear usage there are a decent amount of places out there you can find e.g. moreplatesmoredates, none of which have I ever seen actively advise people to take gear but do say "if you are going to do it this is what you should do" and caveat it with side effects, similar to safer usage advice for any other drug.