It's like this with pretty much all heavily experimental styles of music and art. Such genres have very few rules, primarily because they center around breaking the rules of music theory that most modern music hinges upon, so it's easy to make complete garbage and pass it off as art in that genre because most will simply hear a jumbled mess and think "Yup, that's breakcore." It has always been music made by heavily autistic musicians for other heavily autistic musicians, and the whole idea is to be creative through breaking your sounds in various ways while still keeping everything
technically musically coherent using shit like creative drum programming and weird time signatures.
Few people understand what separates the genre from typical DnB, and they just associate it with anime girls and fast drums. Autists like fast music, and the anime shit just attracts those autists who spent more of their time gooning than developing a sense of rhythm. This was inevitable, really