Argentine Tango is Dead

Not my headline - as you can see! This comes from the Washington Post of 1920 - it seems the 'middle-aged dancers' had taken over the dance floor - now that would never do! Seems the men had to be told where to put their hands! and whatever happened to the schottische? in fact what is it?
The full story reads...

London, Aug 28. — The Argentine tango, which has been dying since 1914, got its last jolt today, when Maj. Cecil Taylor, president of the Imperial Society of Dance Teachers Congress, pronounced it dead. Fashionable dances next season will be a new and thoroughly reconstructed tango, the fox-trot, the one-step l’Italienne and the Spanish schottische. Simplicity in movement is the basis of these dances. The ‘hip hold’ is barred.
“The tendency of the modern dance is for simplicity in movement,” said Maj Taylor. “There must be quietness in style. No stunts are wanted. L’Italienne is a waltz in a new theme and the Spanish schottische resembles a fox trot, but it is slower. One of the reasons for the slower tendency in dancing is that the middle aged dancer has come to stay.”
The congress rules that in dancing the man should place his hand in the middle of his partner’s back. She is guided in this way, instead of by her partner placing his right hand on her left hip.