It seems to me that Pastels have "evolved".
The original Pastels did have reduced black. They had "washed out" sided medallions. Most of these "original" Pastels did darken some or considerably with age. The washed out side medallions seemed to gain more black as the animals matured. Vivid colors were seen in "many" of these originals. When the description of the Original Pastels was made..... It fit the animals it was describing. Color was always a bonus, but not required to be called Pastel.
Now, you need to "fast forward" 10 years or more. Not really sure how long it's been since the "first" Pastels.
Pastels have become so much better than they "originally" were. The side medallions remain soft in color. The black is non-existant. The Pastels of today are nothing like the "originals". This "new look" has come to be "expected" of Pastels. For many, if they don't have this "look".... Then they're just not a Pastel. Even color, for some, has come to be "expected" for an animal to be Pastel. Pastels have become as close to Hypo/Salmon as possible, but don't quite make it. So, they're called Pastel.
Now, you have to add in all those that never "read" the description. The ones that don't know what's required of a boa to truely be a Pastel. When most people hear the word, "Pastel"..... The first thing that comes to mind is "COLOR!!" They don't know it's not a requirement to be a Pastel. They see "pink" and they think PASTEL. They label their animals accordingly.
Then you have the "Pastel Confusion". People see Albinos and Hypos/Salmons. These are labeled Pastels as well. Well...... The black is non-exsistant in Albinos. The "only" thing that would allow a label of Pastel Albino is the "color". Obviously color is required for an Albino to be Pastel. Without it..... It's just a nice normal Albino. The same with the Hypo/Salmon. Sure they can be really clean, but without color... Not what most would consider Pastel. A nice clean Hypo/Salmon without color... It's just a nice clean Hypo/Salmon.
Now, you've got a set of "double standards". Sometimes color is required and sometimes it's not, in order to be considered Pastel.
So...... What can you do? I guess you can look at an animal. If it's "called" a Pastel, but doesn't fit your "idea" of one..... Then move on.
Since different people have different "ideas" of what a Pastel is the label doesn't really matter. A name is just a name or I guess it would be "label" in this instance. Just because an animal doesn't fit your or my idea of a Pastel, doesn't mean it's not. It just means that there are "many" ideas of what a Pastel is. You just have to pick the one that's right for you.
On a side note, you wrote..."As a side note, I'm MUCH more in favor of giving new, reproducible "looks" a unique name (like harlequin) than a descriptive name (like pastel). And anyone who says that something is _____-ish or ______-like (ex. pastelish or junglish) should be shot repeatedly in the tongue with a bb gun until they learn their lesson.
Also am I the only one who ever gets the urge to email a one word message to some people who advertise animals? Something along the lines of... REALLY? or.... riiiiiiiiiiiiiiiiiiiiiiiight or.... hahahahahahahaha!!! or... LIAR! or.... SCAMMER! I can't be the only one..."
I firmly believe that "voilence or rudeness" is NOT the answer. 