As usual, you make some very compelling arguments, and some of it is accurate, but it's riddled with disinformation.
You continually use subjective terms and definitions as objective judgements.
Why does diSEMBOWELMENT sound like Australia? Is Australia harsh and barren? Why does so much unique flora and fauna live here, and a thriving aboriginal race for many tens of thousands of decades. You could take it a step further and say it sounds like Antarctica, cold, desolate. But life thrives there too, and underneath is rich green land untouched for milllennia
You believe your own interpretation to be valid and objective, but it's an interpretation of ART, and art requires you to bring your own mind and imagination into the transaction.
These terms are relative terms, not empirical.
Australia and the rest of the world are flooded with lackluster mediocre bands because that's what the members are exposed to. Not everyone has developed the capacity to learn or discover things for themselves. And you have to dig through the shit to find the roses growing underneath.
Furthermore, you say metal is purely masculine in nature. Some of it may be like Ildjarn to an extent or Suffocation, but diSEMBOWELMENT? Fuck no. Disembowelment is HOLISTIC and androgynous, It doesn't work in dualities and it isn't about dominance. But as I said, it is art. You will make your own interpretations.
But to irrationally brand your opinion as objective, is completely lacking a depth of knowledge.