This sounds weird, but I would almost like to think he is, considering how much I love Nirvana and yes, Kurt, himself. It would be great knowing a musician so close to my heart went through the same things I did. Even if he is now dead (RIP), I would like having someone I could connect to in that way.
If I'm going to be honest, however, I do not think he was autistic. I do think he was a little strange and might have had some aspie-like traits, but he seemed less...socially awkward. He seemed like someone who could be and actually was (still is, in a way) very popular but just didn't want to be. I do know he struggled with bipolar disorder though, and more obviously, drug addiction. A mix of those two things, as well as the pressure of fame and some other things in his life, are probably what lead him to suicide.
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I'd rather be hated for who i am than loved for who I'm not-Kurt cobainn