This highlights the dilemma for tango and, from YouTube evidence, also for other dances. We live in an age of outward visual show for passive entertainment yet true social dancers dance for each other without regard for the watchers. The old dance adage of "dance as though no-one is watching" is very true. The social tango dance of the senses has almost no outward show whatsoever and it was given a visual and dramatic appeal by show people for commercial gain. That is the tango that was promoted and still is promoted around the World. If you want to be entertained, go watch a show, if you want to partner dance tango socially (and sociably), learn how to dance for your partner. That's if you can find a teacher.