Also, In this article we have Prozac saying the aesthetics are easy to copy, then he says morbidity is essential in bringing meaning to these bands.
First, thanks everyone for reading.
I think there's a misunderstanding here: language is tricky.
In the context of the article, "aesthetics" = issues such as how much distortion is used, kind of vocals used, how fast the drums are, whether or not bass is distorted. This is distinct from other ways of making dark music, e.g. Dead Can Dance or Diamanda Galas.
In the context of the article, "structure" = composition: type of forms used and complexity therein, relationship between riffs and phrases, degree of melodic versus harmonic coherence, etc.
I think you, TC (thanks for the kind words - ANUS no longer has a thanks list, regrettably), and I are saying the same thing.
Anyway, back to reading these interesting responses.