wandering off into the wilderness poorly equipped, trained and prepared is either naivete or stupidity -- kind of on par with taking on Everest w/ a stick and backpack full of cliff bars 'cause you read some good books on bouldering.... I'll give him the benefit of the doubt and go with naivete.

The guy's behavior and decisions destined him to be dead, prolly sooner rather than later. That's self-destructive or oblivious - depending how many layers you wanna dig psychologically.

Angst - meh, manifested in an extreme need for escapism from the establishment at an early age. Difficulty finding place in the world / culture / community driving a desire to withdraw. I dunno... maybe something other than angst.

And the melodrama was prolly more due to Sean Penn's directorial biz as usual. The whole find the leaf in the book, oh nooooes the wrong leaf, getting skinny, getting skinny, getting dead with lots of long shots of zombie pallor and deteriorating motor skills. So FMP... "melodrama in direction"...

Did I mention the cinematography was cool?