Not too familiar with it, but it could be one of those things that started out as ironic and people pretended to like, but it kept going for long enough that it eventually started sounding normal to those people, losing its ironic status and becoming an established subgenre. Once it became trendy, new people started listening to it to fit in with the subculture.

Or maybe some people just genuinely like it. I dunno. Even noise music ( https://youtu.be/pGzrL8J0t-c ) has an audience, so people will listen to anything.