>>> This result will improve consumers experience, improve privacy, and demonstrate American innovation and leadership in the internet economy.
You're right, a "please don't fuck me over" scrap of data added to a client header which a vast number of webmasters will just treat with mild bemusement, not to mention all the Apache servers that will ignore it completely, will totally do that. Hell why didn't they do it earlier.
The "admen" are correct in saying that a default setting of on is completely counter-productive. Obviously you would, as a webmaster, now ignore all MSIE settings of the header, because it has been made totally meaningless.
It always was destined to be ignored though. Unless it is regulated, why would any webmaster implement it? The notion is bizarre. If you don't want to be "tracked", maybe try configuring your browser so it doesn't enthusiastically cooperate. After all, it is your own software that provides the relevant data. Asking the server to do it for you because you're too thick to take responsibility for yourself is ridiculous - and a false security as the real problem causers, the spammers et al, will definitely ignore your plaintive little header.
GET /butthole-pirates-tracker-ad.swf HTTP/1.1
Cookie: lolz=schmuck_number_69; interests=gay_porn
If-Modified-Since: Wed, 03 Oct 2012 01:23:45 GMT
You do realize that your browser, any browser, including MSIE 10, would happily send the above headers? And how utterly fucking stupid that situation would be?
Give me a break.