Yeah, we've heard this before.
When the general population is routinely having unprotected anal sex with dozens of strangers in sticky-floored "bath houses," perhaps I'll lend some credence to his concerns.
MRSA is nasty and it can take out relatively healthy people. It is a big problem at hospitals in America and the UK. It is underreported because hospitals are not required to report it to CDC or the public. But privately among doctors/staff it is a huge problem. There’s only one drug that can knock it out and it’s only a matter of time before it mutates to be able to deal with that.
You, friend, are sadly uninformed.
Unlike HIV, this is not an infection that is passed ONLY during sex. It is passed through casual contact, so anyone, including those who are far, far away from the homosexual community, can catch it.
The point of the article is that this superbug is being picked up by these guys, for example, while in the hospital, then they go out and give it to many, many more people through multiple sex partners.
This increases (1) the total amount of bacteria floating around the community, and (2) the number of people who can place the bacteria in public settings (transportation, restaurants, movie theaters, anywhere people go).
Because there is more bacteria, and it is moved into more places, more people who have nothing to do with the original population can pick it up and get very ill.
Google MSRA and read the stories of school shut downs and so on. The threat to the general population is because the bacteria is spread by casual, not sexual contact.