There are a hell of a lot of people - and a hell of a lot of people who have sadly died - who would be very surprised to hear this. It's a pretty accepted view by those that study the AIDS epidemic that calling it a gay plague caused massive problems for people who weren't gay and contracted HIV.
Singling out gay men for what you have decided are immoral behaviours is exactly why there is a stigma around HIV and why people continue to fail to seek treatment.