tango and tango music in particular is just not cool....
all the cool ethno-ukayans are dancing salsa, kizomba, merengue, and the rest are modern jivers
Around here, the tango dancers also have a reputation as being snooty and clique'ish which makes some people who started tango leave it behind for Latin.
My impression is that the Latin dancers here definitely spend more time dancing than taking instruction. The Tango scene here was rather hard to get accepted in if you weren't taking part in the instruction that the majority were doing. I don't know how much that is still true of the tango here, because I know most of the people in it. But I have heard people who stopped tango'ing say that the obvious division of the "A-list" from everyone else was too off-putting. (the A-list wasn't even defined strictly by dancing level either)