You say that but give Aphex Twin, Igorr, Squarepusher, or my favorite, Venetian Snares a listen.

Take this one for example. It is designed around percussion but there is a ton of shit going on. Or what's popularly called "The Hungarian Albulm".

Turntablism, the good stuff anyhow, takes a lot of creativity. See Mr. Dibbs. And turntablism goes back to jazz and funk, both largely driven by percussion and bass. I know some people might call this cheap but there are some cool things going on in it. There is a lot of jazz that makes callbacks to classical/romantic era music and then they go wild with it.

There is a ton of garbage out there in EDM and rap (thought I can't really speak to rap, as I'm not in to it), sure, but it does a disservice to the talented people making some incredible music. I get many people aren't in to the stuff I used as examples, especially the electronic stuff, but it can get pretty deep.