It's not about stress, it's about the need of the individual to make a difference. Doing something that has been done before it's not that exciting for a 20-ish year old. But someone older will take comfort in it.
She really lost me with the stuff about raising $200m - I'm sorry, but that's very, very, very unlikely to happen with an unproven manager with no track record - unless her family name is so strong she could just ride on that. But even given that, I don't know anybody that is giving out $200m to a 25 year old who hasn't run money before. Maybe that happened 5 years ago - I don't think that is happening now.
Lastly - I think it is an interesting idea to audit shipping records to decide on a position (macro I'm assuming), but there was also no discussion of whether she had even tested this and if it even worked.
Like an earlier poster, I frankly found this post insulting.
I get your point about "having more meaning" -- but I'd argue that is true for any business endeavor, not just tech startups. If what I was doing didn't have truly personal meaning for me, there is no way I could stomach the stress.
Maybe I'm overly sensitive because the article seemed to compare the easy hedge fund life to the tough tech start-up life, which I think is a gross over exaggeration in the divergent profile: I believe that they are tremendously similar.
If Dad was an MD he would've said don't become a surgeon, do research and try to change current procedures. At least that's my take on the blog.