You say that as if someone is suggesting that announcements in the NY Times ought to replace safe sex education. What is being stated is that as gey unions are seen to be more commonplace, thing will become easier for gays who are seeking to settle down with a single partner. That perhaps some people might see a future that appeals to them. That some people might think a little earlier than otherwise that there’s more to being gay than all the fabulous gay sex.
Of course, there are those that want avoid monogamy. They should still use condoms. And there are those who want a lifelong partner either way, and great for them. But among those who waver between the two, for those still in the closet because of what they percieve as society’s attitides toward homosexuality, for those who haven’t thought about what comes after dating, yeah, I think they may act a little bit differently in some cases due to being exposed to gay unions recieving equal treatment somewhere. And increased monogamy among the gay community would mean less spread of AIDS among the gay community, which is a good thing.