I’m having conversations with people about this restricted “marathon-style” dancing.
There are several standard explanations, all of which are truisms, applicable to All tango, and, as I’ve pointed out before, ultimately matters of level, not style.
“What’s important is the connection.”
“it’s about the music”
It’s important to be safe and respect the line of dance.
None of these things necessitate eliminating movements.
The only thing that justifies reduced vocabulary is revels who can’t handle it.
Why can’t they handle it?
And why would an ambitious mark want to dance with such a girl?