No, I don't ! She wasn't really a Goth anyway, and neither was Luke. They just adopted some aspects, as many young people do-----IMO.
I suspect that, if Luke killed her, he did it while he was high on drugs.
If someone else killed her, it was, IMO, either because she knew something that the killer didn't want revealed, or it was a murder by a random person with a serious psychopathic disorder.
Just my opinion, though.
I agree with that assessment. I don't think either of them were seriously into Goth culture. And what you say about random assailants is perfectly possible and in fact may well have precedent.
Where I part company with you is in reference to Mitchell.
We are led to believe he was a regular and perhaps heavy drug user. But from what I know of the cannabis in use at that time I don't think however high he might have been, I don't think cannabis would have been a factor in what he did to Jodi.
Perhaps he was using a different drug or a combination, but I've never seen any gossip about that although Shane appears to have had real issues with drugs.
I think the circumstances of the case made by good old fashioned police work weaved all the threads together to make a viable case against Luke Mitchell. As I see it each piece of the puzzle slotted into the next and contrary to what I have seen some people saying the police did check out others and eliminated them leaving only Mitchell in the frame.
I must also say that I feel that neither he nor his mother did him any favours in the months between his 'finding' Jodi's body and the police laying charges against him.