Kinda my point.
The poster they are responding to made the comparison. Why not deconstruct it to explain why it was wrong? Assuming they understood the other viewpoint, when they made the comparison to begin with, would seem to indicate they do not.
Your point is bad because the comparison is obvious and really shouldn't need to be addressed, in the same way I shouldn't have to address how the sun and my fridge light are not the same. It's just not a good point and, roughly speaking, shouldn't really need to be addressed as much as the other person expand on it in a meaningful and useful manner to show why it matters.
Oddly perhaps, queer RPGs are one of the places people seem fine with sexual content in an RPG. Thirsty Sword Lesbians fine, Horny Bards bad. Monsterhearts, good; straight fighter hooking up with the barmaid, bad.
Perhaps because in order to be queer content, it has to allow for expressing sexuality. If you don't express sexuality then it is assumed everyone is straight, in an oddly fantasy asexual world.
I think you basically answer your own question: to express their queerness, you kind of have to express and explore their sexuality. That's part of the point of it, to be able to be comfortable doing those sorts of things when they might be in a place where they normally can't.