@Trailblazer ,
Here's the source of the "purge from the world" quote. It comes from a "previously untranslated tablet" from Baha'u'llah.
Homosexuality
There are a couple of ways to apply apologetics to the quote, and since Baha'i are permitted to individually interpret scripture, I don't see a problem with diminishing the negative implications in this way IF one is only concerned ONLY with what Baha'u'llah said and wrote about homosexuality.
However, if one reads the entire "compilation of homosexuality" (link above) from the UHJ it is repeatedly and clearly stated that the Baha'i position is that homosexuality is unnatural, abhorrent, and destructive to society. They recommend counseling, doctors, praying, and focusing on Baha'i scripture as a way to address homosexuality as a "handicap".
They also prohibit a platonic homosexual relationship, so, it's not just the act of intimacy which is against God's Law. The loving commited partnership is deemed wrong as well.
All of this indicates that the UHJ advocates an anti-gay agenda. Even if individual Baha'i in practice are tolerant and equitable towards homosexuals, that does not overrule the UHJ position and assertions that being gay, in one's heart and mind and body, is a flaw which needs a remedy. That's an anti-gay position, it doesn't foster unity and a future world where every human being is treated as equal.
I was glad to see in the linked baha'i-library document confirmation that the prohibition only applies to Baha'i. It is, indeed, explicitly stated. But this is not emphasised enough in the document, imo. The over-all impression I get from it, is that homosexuality is perceived to be a global problem which harms society. This matches the statement by Baha'u'llah that "evil passions" should be "purged from the world". Because of this, it's difficult for me to feel better about the Baha'i position just because at the end of the document there is the moderation that the prohibition only applies to Baha'i. But that's just my opinion. Based on what I'm reading in the document, it sounds like Baha'u'llah was probably anti-gay regardless of whether or not the Law applies only to Baha'i. The anti-gay statements in the majority of their position are more impactful.