Hey batfan08. Thanks for the respectful criticism. Admittedly not what I came for, but appreciated. Here's my take:
Semantics aside, I don't believe in value as "intrinsic worth". People subjectively desire things, but beyond feelings there is no "essence" to things that makes them important. It's very consequential when you consider that normative statements regarding morality, Justice or universal pragmatism, which are theories involving obligation, depend on the existence of intrinsic value in order to make sense. If I think an omnipotent pink unicorn exists, that doesn't mean it exists. The concept exists, but it's an abstraction that doesn't represent an actual omnipotent pink unicorn.
In terms of what we know and what we don't, that's a complex and controversial issue. I believe that science describes the only sound proof regarding what exists: by creating an abstract "logical" model that relies on falsifiable empirical evidence. That's controversial. I'd argue that everyone has a burden of proof when they make a claim about the world, and in the absence of falsifiable evidence, there's no reason to believe in something. You have no obligation to agree or appeal to science, but my view is that all other epistemology is problematic. There is no "apriori" knowledge.
As for GG, I agree that he was damaged and needed help. I also think he was irrational in many of the ways you describe. I agree that being reactionary is inadvertently allowing your behavior to be controlled by an external agent. However, I think it's fair to say that he was openly and willfully disobedient, priding himself on breaking the law, getting arrested, habitually disregarding cultural mores and morality. That in and of itself isn't what interests me. I like that he turned disobedience into performance. He didn't just sing about disobedience, but actually performed acts of disobedience publicly. While his culty schtick and empty suicide threats were lame, his singing was horrible, his songs were idiotic, all of that is overshadowed by his wilfull, primal display of hatred for societal constraints. I wouldn't ever see it live. I'm not saying it was sophisticated or well articulated, but it was definitely well executed as a performed act of defiance that stands out, and sets the benchmark in it's depiction of contempt. Should you like it? I'm not saying that, of course. I could see why people wouldn't. But it's art, and I find his act is compelling in many ways when you consider the context. His performances were retribution.