I'll make the assumption that you have the privilege of sane mental health, and that you have the privilege of being free of addiction to substances. So when you speak about all these things you can't speak for all of humanity or indeed all of a blog readership, only for your perspective, from the privileges that you carry with you. It is from this place of privilege that we can label someone as "essentially a highly-privileged drug addict", as if that catch all label means anything at all. I don't think this is how she would see herself. Indeed, there is nothing highly-privileged about being dead.
Your assortment of nations mention, of course -- there are tragic things going on there just like in all of our neighbourhoods. But what can we focus on as individuals? What should we focus on when we're posting on a film blog? That people are mourning the loss of a soulful singer does not mean that they're not also caring about Norway, or donating part of their salary to the Red Cross. So it seems strange that you would need to share links to Amnesty or Unicef.
Amy Winehouse was very charitable - having donated proceeds from her songs to HIV studies, donating thousands of pounds worth of clothes to charity stores, and posing for photographs for Breast Cancer Awareness. I think it's important to look at these things from a bigger perspective. Ophelia sees Amy Winehouse as 'a highly privileged drug-addict', which is disappointing because, after all, Winehouse is an artist and a person who was far, far more than that.