You seem to not grasp what is right in front of your face. Of course HIV affects others besides gays but gays are the leading cause of the spread of HIV especially in the U.S.. See this:
http://www.cdc.gov/hiv/group/msm/ The stereotype is there for a reason.
Yes, Apple has supported the AIDS foundation for over a decade but that faucet can be turned off at any time. Do you really think Tim Cook would do that? Of course not. It would be the LAST thing he would do and I'm 100% sure that him being gay is a factor. It's not rocket science.
Just keep it real and don't be blinded by political correctness. People have motives for everything and its pretty easy to see them if you don't cloud your own judgment by people telling you how you should be thinking.