Good for you? But just because you never bought a phone that routed audio over a headset doesn't mean they never existed. I haven't been to the moon. That doesn't mean the NASA footage was filmed in Nevada and was an elaborate conspiracy to fool the Russians.

Nokia has had several phones that allowed media audio to go over bluetooth headsets. I used to do this all the time with my N6230, in which the media player and J2ME apps would all have sound routed through a headset if enabled. Likewise, an Ericson I owned and the FreeRunner I had both did this as well. (In fact, call audio was about the only thing that didn't route properly over a bluetooth headset in the FreeRunner.)

I understand the desire for a setting to change this behavior. But it's not like this is a set-in-stone standard, as you seem to be portraying it to be.