Do homosexuals lack a clear understanding of STDs?

First of all, let’s be clear: you’re referring to MALE homosexuals. 

No, I don’t think so. Many of them simply don’t live in deathly fear of STDs. Or rather, any fear they do feel doesn’t override their needs sexually. That proved to be deadly in the eighties, of course, but that same fearlessness also helped fuel medical discoveries that are saving lives today. 

I guess it all comes down to perspective.