How do people convince a record label to sign this...collection of unpleasant sounds? And what kind of people does this appeal to?

I'm guessing this would appeal to kids about age 12-15. Kids of that age are impressionable and don't have a lot of experience with music, so they tend to listen to whatever is played to them. This song has a few elements that are appealing to this market such as a dance beat, autotune, and screaming.

Don't ask why some people like screaming, but I guess some people do. Personally I think this song is pretty bad. These days however there is so much music out there.

Often good music goes unnoticed while bad music is given lots of attention. Unfortunately the music business is about more than music. It has a lot to do with image and connections.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.