indonesian themselves call among themselves as indon.
until after that they dont like it anymore.

https://id.wikipedia.org/wiki/Indon
https://ms.wikipedia.org/wiki/Indon

like how here we call Orang Putin "white people", or indonesian call them "bule"
since its not an insult, and not see it as negative, nobody cares
same as word nigga, to begin with, its not an insult, but used to call black pipul,
niger means black, there is even a country call niger and nigeria.
but modern time, pipul dont like it, it became an insult.