What's the problem with just going to the blacksmith and buying a sword and the blacksmith happens to be gay? How is that "propaganda"?
More to the point: how is it relevant, or ever likely to become so?
[MENTION=82779]MechaPilot[/MENTION] points out - quite correctly - that in (most) movies a character's sexuality is more likely to be relevant than its religion. I'd suggest D&D is the opposite: an NPC's religion is far more likely to be or become relevant than its sexuality.
As for PCs...
tombowings said:
Why not encourage homosexual PCs, then, since they're the heroes of the story?
...the sexuality of any played character is left entirely up to the player.
Which means that in the party I currently DM there are as PCs:
A lesbian Dwarf (Fighter)
A straight female Human (Illusionist)
A female Human whose sexuality remains unknown (Wizard, brand new to the group)
A female Elf who is, if anything, trending asexual (Nature Cleric)
A straight male Elf (War Cleric) but note he's married to (and has had a child with) a Human female
A male Elf whose sexuality is...well, I'm not sure, but given his religion* (he's a Nature Cleric to a god of sheer chaos) would most likely fall into the "tri-sexual" category - as in, try anything
A Gnome who started out as a gay male then got hit with a gender-change effect so is now a straight female (Cleric)
A female Elf whose only role-played relationship was with another female (so either bi or lesbian, not sure) (Thief)
* - ironically enough; and yes even though there's 4 Clerics in the party sex still comes up way more often than religion
Lan-"maybe it's because sex is more fun"-efan