I have used both Kodachrome and Ektachrome, and I can see why someone would say Ektachrome is superior (it had finer grain as far as I remember) BUT: photography is art. Sometimes an artist prefers to "paint" with a different palette. Kodachrome had a distinct color palette that does not really resemble any of the other slide films. To me, it often looked "earthy" in the oil painting sense (earth tones such as yellow ochre and iron oxide reds. The reds often looked "rusty" to me). It would turn saturated only when light was good and the subject had good saturation (again, in my experience). Finally, I often noticed that while most E6 films "fade to blue" when the light is not optimal, Kodachrome would "fade to gray", which is actually sometimes preferable. Sorry for using my own lingo here, but does this seem accurate to old Kodachrome users? On top of that, it really did have an interesting "sharp" look (this includes contrast etc).
So, if you ask me, if someone likes those characteristics then wishing it would make a comeback is totally legit.