I only speak English and know a few weeb phrases in Japanese. Indonesian, at least from what I've heard from HoloID, is a lot more fluid or flowy sounding to me than either English or Japanese. Maybe round? Is this just some kind of weird synesthesia or does that make sense to anyone else? I also like that a lot of words from Reine's Indonesian lesson streams are very similar to English, or at least feel like they make sense.
Just for example, compare Reine's accent to Suisei's and Calli's in beat eater.
Obviously she's singing in Japanese and not Indonesian but maybe the contrast there illustrates what I'm talking about.
I guess everyone has preferences or things that rub them the wrong way. Just surprised me to see the number of responses describing a distaste for the way the language sounds. I'm curious if those of you who find it irritating are native Japanese speakers or something else as I've heard Bahasa Indonesian is often viewed as sort of crude by people in Japan (though i do not know if that is actually true or not).