Hmm don't ask me
If you asked them, you'll get one of two differing explanations:
1. They actually genuinely hate Kylie Minogue;
2. They really hate me and are only defacing her image in order to harass me.
The explanation differs depending on what the topic of the day is, because:
1. Would be libel;
2. Would be an ImgFlip TOS violation.
So you'll hear one or the other, but in reality it's both.
But the real reason, if I were to be so bold as to offer an opinion?
They're a bunch of hate-addicted babies who wanted to create a safe space for whining at me free of logic and reason.
Yes indeed: despite the disgusting visual content, what the stream actually amounts to is a safe space where hate is free to breed unimpeded.
Just my two cents