The rumors about Chinese girl groups manipulating music charts are quieter than expected

People keep talking about it in all sorts of idol-related communities,
but it's quite surprising how quiet it is overall.
If they wanted to engage in reverse viral marketing, this would be far more fatal
than a small amount of debt-driven investment rumors.
I can assume music streaming sites are just keeping their mouths shut to protect their profits,
but seeing competing companies remain quiet as well,
either everyone has something to hide,
or it's not chart manipulation, but actual talent.