Well you clearly don't understand.
Enlighten me.
If this isn't a topic that's important to you, then so be it. People understandably have their own priorities. But it seems pretty clear to me why people sympathetic to gay rights issues would take issue with how this character is portrayed.
I'm homosexual and in a couple with my boyfriend for 15 years now, and I couldn't care less about this given what I read about it. I've also volunteered in associations. Does that still mean I'm not "sympathetic to gay rights issues"?
You see, I happen to think you don't need a fictional love story to necessarily be the same as your own orientation to be moved. Out of porn, I actually can't think of any love story between men that I'd put in my top 10 (in that top 10, I have Eternal Sunshine of the Spotless Mind, for example) - including tearjerkers like Brokeback Mountain, which hardly moved me (yet, I saw tons of straight couples crying in the theatre, BTW).
Homosexuals are a tiny minority, and it's unreasonable to ask for a disproportionate representation in a mainstream product, especially when it'd ask as much work as it would in this case, and especially since love stories don't matter much in Fire Emblem anyway: basically, those stories are just there so you can farm genetically selected babies to fight in the next generation. All those relationships are phony anyway.
Sure, it'd be fun to play around with cute guys having a gay male orgy, like if everybody was homosexual, but I'm not sure it'd make sense to ask Nintendo for that sort of product. The overwhelming majority of people is straight, that's the way it is, and whether people like it or not, the two homosexual characters in Fire Emblem fit statistics.
Now, for this particular dialogue, maybe you're right, maybe I'd find it offensive. Yet, I have to admit I won't bother watching the video, especially since the sequence has been censored anyway, and because 99% of the times I looked into that sort of issue, it ended up making me roll my eyes at the victimisation. Since the people outraged are the same that find an accurate proportion to be some sort of scandal, I admit I assume it's the same for this dialogue. It's been removed without anybody asking for it, though.
Also, I happen to think artists should be free to do whatever they want, provided it stays within very broad limits. Asking for a disproportion of homosexual characters is misguided entitlement.
Whole lotta empathy up in this post, I can see...
I'll tell that to my boyfriend.