The "it will ruin male friendships" argument holds true upon one major contingency: bigotry in the form of the continued fear of homosexual relationships. That is, if men are comfortable being around homosexuals, and being hit on by homosexuals whilst still remaining heterosexual, then this thesis could never hold true.
OTOH, let's presume the opposite holds true, and that homophobia and, more specifically, the fear of being hit on or - the greatest fear of all - kissed by a man, continues to persist, then perhaps male relationships will be ruined. However, for this to be the case (that distrust of males, and the resultant broken friendships, as a result of fear of homosexuality), this movie, nor any other movie, need be part of the equation. (The same can be said of acceptance; the movie isn't a crucial component in either direction).
In the end, what this thesis suggests hides the true relationship: that hatred or acceptance of homosexuality as a lifestyle will affect male friendships. Granted, I don't think that's necessarily true (proof, fact, and factorum: we all have male friends who are far closer than drinking pals, right?), but that's not the point.
What is most ironic about this thesis is that the proposers claim that *normailization* and *acceptance* of homosexuality as a lifestyle will ruin male friendships, when in reality it is a logical impossibility for that to be the case; contrarily, positioning men against each other as a consequence of identifying one group as "normal," and one group as the "other" leads to greater friction and conflict *by virtue* of the fact that "other" always means "different," and society can not have an "other" without establishing a heirarchy, in which one is superior and one is inferior. So how delightful that the arguments being made by this group not only exist independent of this, or any other, major motion picture, but are also logically impossible to occur!
That having been said, allow me to say this: tee-hee.