I don't see how not reproducing is equivalent to killing or death. As I've pointed out in the past, there has never been a single unborn baby that has met dismemberment due to an act of homosexual activity. Heterosexual activity, on the other hand, has indirectly led to millions of abortions. The fault lies with the individuals who decide to abort, of course, not the sex itself. But perhaps you see what I mean.
It isn't directly. But both abortion and homosexual "pride" are symptoms of the same evil, the idea that human beings can establish their own moral order based on their own understanding of how things work. We're eating of the same fruit of which Adam and Eve ate, and it's bearing the same destructive fruit. Abortion and homosexuality are two results of that fruit.
Nevertheless, having said that, in other aspects of the 'lifestyle', I would say a certain culture of death exists in that individuals make conscious decisions to engage in free will acts that promote the spread of a disease that is deadly and has no known cure. surely, this part of homosexual culture could be termed 'pro death'.
At the end of the day, I do not see anything particularly pro-life about the homosexual agenda. it neither promotes the procreation of natural life, and many of its adherents also engage in acts which flirt with death. Something is not right here.
I have met and had lunch with some men from PLAGAL, found them to be likable with the exception of one gossipy old queen who had it in for the Catholic church. They said they were generally much better received by pro-lifers than by the homosexual community. And no, I don't approve of homosexuality, but we have all sinned and having them arrested for participating in a pro-life rally (which is no sin) will neither bring them from sin nor bring anyone else to recognize the evil of abortion.