They honestly don't care and I would go as far as to say they want that to happen. There was an article recently about HIV positive people deliberately lying to the Red Cross about it when donating blood because they see their rejection as being homophobic. It's the deep, internal shame they have for their choices and consequences expressing itself in the form of "If I have AIDs, then everyone should have AIDs." Big chasers also go here. They want to normalise HIV/AIDs by giving it to everyone. They are so far beyond the point of common decency or even basic rationality. They are actively trying to drag everyone down to their position at the bottom (no pun intended ... maybe).