Obviously. It couldn't possibly have anything to do with the scientists wanting to make sure that widespread HIV infection didn't break out within heterosexual communities - which it could easily have done as we've seen in Africa. If heterosexual people had been taught they didn't need to worry about HIV, we could easily have had similar outbreaks here which would rapidly have made the odds a lot worse. (Also, it's impossible to reliably tell if the person you're having sex with is a member of a high-risk group anyway.)