Before talking about cultural appropriation please know that some culture can have similarities...lots of Koreans and Thais explained that this is also a Buddhist move that they learn in primary school.

@jungwooo9 on their account explained that a similar move is also part of the Thai traditional dance. I'm going to link some of their tweets

https://twitter.com/jungwooo9/status/1254395391304364033?s=19

Please click on the tweet with the video to see the other part of this thread