I do not think that greed ever ends.
Along with the outright mis-described listings there is an entire other class of listings which can fool the buyer. The standard example is the long-running NY Stamps infamous "Some stamps could be expertly restored, regum, or repaired" listings. These other listings I would term 'misleading but accurate'; they skirt the rules and fall within the gray area of ethical practices. Examples include sellers who listing shows a large stack of plate blocks as the primary image but the listing later shows the actual number of individual plate blocks as being only a handful.
Another listing type that seems to be showing up more is this kind…

If the description is read closely the buyer will note it clearly states, "All With Slight Faults To A Greater Or Lesser Degree". Indeed, then why tout, "Scott Value $10,000.00" in the title? If this was a onetime listing of a dealer cleaning out some faulty stamps I might understand but this particular dealer is now assembling and selling these types of lots every week of two.
These types of listing clearly fall within the realm of buyer education. If the listings are carefully read and understood by the buyer chances are good they would not fall for them. After the sale, I think a large number of buyers simply get embarrassed, see they might be in for a fight for a 'not as described' return, and just suck it up as lesson learned.
But I doubt that anyone would argue that these practices are good for the hobby or for other sellers and dealers who do not use these kinds of selling tactics. And while some hobbyists might have enough experience/knowledge to pick and choose the better offerings from some of these sellers I often wonder about the wisdom of supporting them.
So if we support them, if the buyers do not push back and return these types lots, they will continue to be rewarded for these kinds of practices.
Don