Sigh. The idea is (presumably) that for viewers, dates are (a) almost entirely useless and (b) harder to parse. I don't care what millisecond this file was uploaded; I care, relatively, how old it is.
October 26, 2007
"Okay, October. It's October. 26. Is it the 26th? Clock says it's the 27th. Oh, but it's past midnight. Okay, that was today."
October 18, 2007
"It's October. 18. What day is it? 27th? 9 days ago, about a week." (What day, exactly? Who cares?)
October 23, 2006
"It's October. 23.. um.. few days ago. Wait, 2006, fuck."
Dates require parsing to turn into something conceptually useful. The exact date is of absolutely no use to me in most cases; I just want to know artist's last activity, time between uploads X and Y, etc. I usually can't even tell you the date because I have no use for it. I care about when things happen relative to now, and the further away they are the more I just care about scale rather than precision.
You may not like it, but that doesn't make it useless or stupid.