I was kind of kidding before, actually... I'd consider the deschloro change as a technicality but as someone already mentioned for me in that thread, without it its just easier as a trivial name, it's more realistic/easy to adapt to what we anticipate the trivial name to become anyway, or the name under which its already being sold. Unless its actually incorrect. And since - as you said yourself - its pretty much impossible to confuse with another compound there is no conflict if you leave it out. If anything including it would point out the similarity with deschloroketamine on a chemical level, but I don't even know that the effects are that similar. Also names don't necessarily have the function to point out similarities.
I love being overly correct some of the days, but IMO it must be met with being realistic about what is actually significant. I may not be a professional chemist but just as implicit hydrogens or stereochemistry are not drawn unless there is actually a point to make, some significant detail to show... IMO compound names [[ that are expected to be picked up somehow as trivial names ]] should not contain redundant details. We leave out what is understood, we don't use IUPAC names all the time either.
No mistake can be made, so it's now implied. Things would be different if every drug user was a chemist, but we have to reconcile our different backgrounds. No errors for the chemists, and no unnecessarily long names for people who easily get confused by all the chem names, or are just dyslexic

.
The O-PCE seems fine, no idea what would be incorrect about that. Just an abbreviation.
If enough people start calling it eticyclidone by the way, then I wouldn't dream of standing in the way of 'democracy'... but at this point I don't see why we have to overcomplicate it and do that. PCP is not called phencyclidine explicitly by many drug users (in their online discussion anyway) as far as I know.. I'd expect that from someone talking about it as a foreign object of research or discussion like a politician. In the case of eticyclidone the name may have come out of fondness for the chemical + contentness with the consistency with nomenclature conventions for these chems (I think). I really appreciate that if its true, but like with the trypts such as psilacetin, those names while being main trivial names are not the main abbreviations.
At least that doesn't seem how it's done 'traditionally' in xihkal and PD.
Anyway soon it's not my call anymore... if these things are important, let us all know why it should be different and correct, if we are being overly correct - clearly not something that yields objective / self evident answers.
[mod note - at some point these posts perhaps ought to be hidden since its irrelevant to BOHB - or move it if you insist on a public argument

]