I think if a friend drove two hours to my house and threatened physical violence because they disapproved of my financial and technology decisions, I would have one less friend.
It's only admirable in retrospect. What if Mt. Gox shot to the moon and decided to pay dividends, but your friend threatened you not to buy in?
I've been threatened by inlaws for subscribing to practices that will end in my damnation -- something much more significant than losing savings. They genuinely believe this. And I still don't think that's right, and it wouldn't be right if everything they said turned out to be true.