[mikro2nd]

Do you suppose that this might be related to the oft-discussed-on-HN ageism that the Silicon Valley-based industry is accused of?

Low contrast may be pleasing to twenty-something year old eyes, but unreadable to fifty-something year old eyes, and, if I consider my own attitudes and thinking at a younger age, I would almost certainly not have been considering how UI design choices would impact people with less-than optimal vision but for a mother-in-law with severe vision limitations.

[Washuu]

It could have a minor bit to do with relative age of the designers, but I would assume it is more do with current designer trends. Personally, I do not wear glasses and have considerably good vision as well I even go to the extent of using good monitors with IPS panels that are properly calibrated. Even then there are issues with font contrast in OS 10.9 and iOS 7 where they decide to use a white font with a very light drop shadow.

I have always made sure to design with disabilities in mind.(Section 508 government work.) There was a previous designer I worked with a couple years ago that came from the Silicon Valley area that would require a weekly reminder that low contrast designs would not be acceptable.

[gutnor]

It is probably more a fashion trend like what affect everything around us.

Low contrast works especially well with the retina and above screens we currently on everything nowadays.