This article (I have only got access to the abstract) seems to state that it's still easy to learn easily for non-Western speakers: https://benjamins.com/#catalog/journals/lplp.32.1.05lin/details

I also do not know any Asian speakers of Eo; but then, living in the UK I do not know many Asians altogether. So it might well be a case of the 'bubble' you live in. Previously I had come across the notion that Chinese people especially liked Eo as it was free of any colonial associations which came with the other European languages.

It still seems to be taken more seriously in China than in most Western countries:
> 1910s: Esperanto is taught in state schools in the Republic of China, Samos, and Macedonia. (Today it is part of the curriculum of China, Hungary, and Bulgaria.) (https://en.wikipedia.org/wiki/History_of_Esperanto