Well, I guess that would be case solely based on one's point of view: is Bioware treating this content differently only because of the sexualities involved? Has that resulted in this content being delayed/mishandled solely because of the sexualities involved?*
*I add this because if they had written, recorded, coded and implemented SGRA's at the same time as OGRA's, we wouldn't be having this conversation.
I will agree that "homophobia" probably doesn't apply.
"Heterosexism" would be the better term.