"Returning to the article, this suggests that there are two factors that constititue the primary threats in regards to the spread of the disease and, because of this, they should be the primary focus of efforts to combat the disease and educate people about AIDS."
I would agree with that, but to exclude heterosexual people would likely lead to an explosion of HIV in the hetero population.
Most important to note here is that they only people making such a suggestion are those who disagree with the article. I'm not sure how you managed to read these additional inferences into the article, but it never makes these points.