Why do you suppose mumble rap has any sort of audience, being as mediocre as it is?
I don't know what mumble rap is, but I don't know why people like rap at all, given how base/crude/degenerate/inelegant it is. Wtf is wrong with humanity. How did I get left on this planet. W
Whatever mumble rap is, maybe people like it because it sets the bar really low for them.