Nexusmods are doing what they believe is the right thing to attain the highest profit, it’s no more complex than that.
The people in charge voted on where the line in the sand should be (to simplify the corporate process somewhat) and homophobia, they decided, should be on the wrong side. They figure that inclusivity, rather than bigotry, is the way to more customers. (I mean, duh.)
They are entitled to do just that, as the modder is to mod the game how he sees fit.
It is not bigotry to be intolerant of the intolerant, that pathetic argument has been dead since before you were born.