I am usually a huge fan of Gssh's post, but I have to pause on this one.
This was intended to be mostly tongue-in-cheek. I am a big fan of traditional tango music - actually i tend to not dance to most alternative tango because it lacks the multi-layeredness needed to make it interesting for me as a leader. And people who treat the music as little more than a metronome are in my opinion not really dancing. But - and this is a big but - for me tango exists in the way the music and the dance combine to a whole. I would have wholeheartedly agreed with the OP just for the written work, but i found the examples chosen jarring - i mean, the denver tango festival? el pulpo? Denver is quite serious in trying to be about good, traditional tango, and from his workshops i get the impression that el pulpo is quite aware and able in the traditional style - while i dance almost none of the vocabulary he presented there i learned a lot of things that have informed my tango since then. This might be aggravated by the fact that i read this at work - i.e. i have no sound. I have seen a whole lot of dancign that was a whole lot less tango.
So i was trying to present a mirror of how i percieved the post - a perfectly reasonable - if a tad overly polemic - argument paired with a video that undermines the main message. I actually really believe (if not quite that rabidly) that tango without the music is quite pointless - and one of my goals has always been that i hope my dancing would passess the "no sound" test - if somebody watched me dance without sound like i do, they should have at least some idea of what the song was like, and think that i do dance tango.