So then if athropology explains why humans are here.
Then we don't need to explain why human males exist.
The article doesn't specifically deal with human males, it deals with males in general. Why do so many species on Earth have separate lovees, rather than just being hermaphroditic and fertilizing themselves (like plants do)?
It explains that having different lovees allows for loveual selection, which makes it possible for the population to avoid harmful genetic mutations that aren't selected out by the environment. This isn't strictly a 'human' thing, it's true for male beetles, grasshoppers, etc.