I guess I just do not understand this thread.
People have preferences. Some prefer the newest offering with all the "improvements" while other seem to prefer the older less improved offerings. I would presume that MOST people really do not agree with the notion that the newest is the most improved...otherwise you would see modern offerings commanding a higher price, and that is clearly not the case (look up a regular, or a classic Sebenza and compare the market value to the 25...and how frequently do we hear about the latest Damascus offerings...).
Futher, I do not believe that all improvements are made for the sake of offering the consumer that best possible product...some are, others, not so much. I am not a conspiracy theorist...I just realize the reality of business is that production costs are something a buisness wants to reduce...and if you can market the changes as improvements (which they are, if they *improve* your profit

) and a zealous client base wants to embrace those changes and hear what they want to hear, where is the harm?
Finally, I will point out that "improved" isn't always. Simply put, a lot of us understand physics well enough to know that a thinner blade works better in some situations. By "some situations", I mean all situations where I or my father, or his father drew a pocket knife to preform a task. Sure, some feel a need to have a "stronger" blade, but many of us have gotten along quite well with thinner blades that also seem to work better for our needs.
I am not saying that people that want thicker blades are wrong, but I will flat out laugh at you if you try and prove to me that a thicker blade offers some advantage to me by being stronger, because you are trying to market a solution to a problem I do not have.
I could address a lot of points that were lodged above, but it is a lot easier to say that I know pretty well what works for me, and therefore I know what "improvements" seem to lead to the statement, "they do not make them like they used to".