I think, all music has a crowd. Maybe this "mumble rap" about good life and rebellion. Everyone is listening to what he/she likes.
Example I love to make melodic music about creative, feelings and positive things.
But I mean It's beautiful, all people is unique :)
Have a great day!
Ferco
from what i can tell mumble rap is about doing xanax and having crap tons of money.... But i only know that by watching the videos with subtitles because otherwise i have no idea what they are talking about in the songs. :)