Kuro Aji or Shiro Aji

[DirkO]

In one of the excellent descriptions on https://tsuba.info/home/ member @paul tsubadotinfo wrote the following:
 

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Altogether the well made iron plate with the shiny dark patina and the carefully executed negative silhouette of the dragonfly result in a mood of archaic elegance. This Tsuba is a very desirable piece for the collectors with black taste (kuro aji) which is the Japanese expression for the ones that understand the old styles well or have a professional approach to Tsuba and kodogu. On the contrary the white taste (shiro aji) means the amateurish look upon things which prefers the easy to be understood, decorative arts.

Obviously this is tongue in cheek, one isn't better than the other (so put away the torches and pitchforks already!). There are also already several topics about this - however I wonder how things are perceived from a Japanese collector point of view? Do they hold old iron above anything else? I'm not trying to spark the Western discussion, just gain some insights on the Japanese side of things.