You're putting words in my mouth. I've never said that all that's sold as MDMA is Meh. Nor have I said that it's 3-FEA (it obviously isn't).
Were you not implying it? Be honest.
Obviously it would be easily detected by both Marqus, GCMS and Raman,
It's never "detected" with a Marquis test; that's not how reagent testing works fundamentally. GC-MS and RAMAN are on an entirely different level of actual analytics.
All I think we can say is that for a period the amount of Meh-reports increased a lot regarding what was sold as MDMA.
You're just assuming that, which is not how science works. No one has presented real data to back up the claim that "meh-reports increased a lot". This is not demonstrably true, regardless whether it's objectively true. Your own awareness of a thing does not prove that thing is increasing universally, even if that's often been the case. Your subjective experience skews how you perceive the world, by necessity, but we've been blessed with logic, reason, abstract thinking, and intelligence. So while not perfectly possible, try to think as objectively as possible and remember to factor in your subject filter and question your own perceptions enough to see the limits and possible illusions.
I do find the overlap in lack of effects for 3-FEA and the Meh when taking psychedelics is interesting as it points to pure serotonin release being a mechanism shared with what people experience as Meh.
There's no data to support what you're claiming about neurotransmitter affinities here, and it seems pretty unlikely to me, even accounting for people's described lackluster responses. I think maybe you're taking an overly simplistic, reductive, and unrealistic jumping to conclusions approach for what you note as an "interesting overlap of effects". Or is it all just me being too intense about sticking to peer-reviewed science published in respected journals? You know: steroids.
The difference from MDMA being 5-HT2A competition without DA/NE counter boost.
This isn't how MDMA works.
Same phenomenon has been reported from MDAI and would probably be true for 2,3-MDMA that is a pure serotonin releaser with subjective effects similar to Meh (- and I don't think nor claim that the Meh is any of those substances).
Uh huh.
Anyhow, great that you share your knowledge and skepticism here, though IMO you could take the latter part off steroids sometimes,

Is it necessary for you to try to insult me like this? Have I made you feel so defensive that this becomes your rebuttal disguised as a "IMO" statement? Or am I just tired of arguing with brick wall opinions and people's easily bruised egos, and the frustration is coming across as confrontational and/or argumentative? Look, you and I agree on a huge number of things, and you've mostly replied with perfectly intelligent comments in this discussion indicating you're simpatico with me on the subject and the points I've argued throughout this thread. I respect you and don't mean to sound harsh or overzealous in criticizing faulty logic and reductive thinking.
I'm just OCD about the truth, pharmacodynamic accuracy, biochemical understanding, and ending the drug war with knowledge, wisdom and application. I know this sounds corny, but all of it stems from my love for my fellow humans and desire to eliminate unnecessary suffering and cruelty. And also I've seen the damage mass incarceration from drug prohibition causes to individuals, families and whole communities, firsthand, and I've personally been deeply affected by the disturbing way society handles non-violent, unspectacular drug crimes. If that's too "steroid" intense for anyone's delicate sensitivities, maybe consider voting and supporting bills to decriminalize drug use and possession, increase treatment availability, spread knowledge of how dependency/tolerance works and drug awareness without fear-mongering or "scared straight" attempts, promote responsible use and harm reduction, reject and avoid "drug shaming" and help fight in the effort (peacefully) to end the War on Drugs.
Have a great rest of your week
EDIT: re-reading my post-before-last, I answered you in way that conveyed a shitty attitude. Sorry. I'm working on being more patient and using kinder speech more likely to kindle a change in thinking. Much can be lost in the transference of ideas to written word. Even with emojis and stylistic emphasis, there is nuance lost that is preserved in the audio of spoken word and the visual communication of body language. Anyway, sorry I'm a little harsh at times, but, like many others on this thread, I like to think we'd get along swimmingly IRL and have a good time hanging out, even if we were just talking on a train; listening to music in my office; or randomly meeting, unplanned, at the same holiday vacation resort (I mean, if we're gonna imagine an encounter, why not something nice? Lol).