I see his point about the clock. It looks, well, goofy. Like it was drawn to appeal to a 5 year old. It's not symmetrical. The hands look like they're raised above center about 10%. It just doesn't look right.
What was the rush, Apple?
It's a very poor icon and digital artwork.
The seconds hand is too long as is the mintues hand, they look the same lenght to my eye.
The black lines of the hour and minute hands (and the red seconds hand) look as if no anti-aliasing is applied. We know from history Steve Jobs would not have allowed that out the door. (google icon on the early iphone, made a sunday call to a designer story is on mac rumors somewhere).
I've been designing icons since my Amiga500 days and this is so poor compared to the artistry, craft and density that went into the leopard and snow leopard icon set that made them deeply rich on the eye.
In sum total it looks unfinished and an early exercise in pixel pushing for someone who might be learning btu I'd expect more! It really is about the details. Only Jobs got that. Ive has an eye for a different kind of detail, if you know how Industrial designs works you'll know what I mean. Jobs had the eye for details for the customer and that is the most important one in the end since the customer is your customer!
Following on from that I had a look at Yosemite on Retina machines in a Premium seller store. It doesn't look as bad on the Retina and the reason is they are trying to simulate frosted glass and frosted plastics (as you're now merging or blurring the line between the physical materials and the display).
Simply put the dock looks crap. The quality and artistry overall in the icons is very poor. I have an animation background and never made the connection as was mentioned with Jobs Pixar time influencing the OS X desktop look, but it makes perfect sense. Now I know why I liked it so much when I first saw it.
To update my tagline for the current theme for YOSX I'm calling it,
Frosted & Flat Aqua.
You see this fetish all the time in design students reaction to materials and such like, frosted is quirky and cool in the material world. It resets a common material into some more dimensional and cool looking for a novel effect.
Yes it's cool for awhile but not for long and it's not something that ever seems to win wide spread appeal in the real world because it's not practical and it's also very cold.
I don't see how Apple might conquer this and the customer reactions only bares my own personal observations that they can not win on this one. It's already established. They're designing with hand bags in full flight. It's prissy and boring to look at in many ways. If you took out that beautiful picture from Yosemite it would look even more reductive or child like as many are calling it.