Even in Mainland China and ROC, youngsters seem being less and less interested in traditional Chinese music. Sadly, Mainland's tradition was severely damaged by Communists during the mid 20th century.
It may not be the case. Even there was the evil Cultrual Revolution of the Gang of Four, they could not destroy the traditional Chinese music totally. I have a number of CDs issued by the Mainland China which play lots of beautiful traditional Chinese folk songs. The Gang of Four of the Cultrual Revolution might be able to destroy and damage all the music books in their era but they could never remove the musical notes that were deeply rooted in the minds of the capable and talented muscians in China.