I don't know, I feel like even if I hadn't used the term there would still be downvotes, people tend to get quite touchy about these subjects.
Growing up I never saw the color of someone's skin or cared who they were attracted to but after the various identity politics or however you want to call them the last few years and how in almost every form of entertainment there's been people trying to force diversity out of nowhere (especially changing the race / gender of an existing character) it has made me question the intent behind bringing up subjects such as these.
So to answer your question, it just feels more genuine. There's a clear set up of how the world works, the issues and why people act the way they do.
I know mistborn is supposed to take after earth and western culture but it's still supposed to be a different world and while I agree with most points brought up here I still feel like he didn't do a good job conveying some of those in the book itself. Reddit does come into it too. This for example and from Brandon's answer this has come up before and suddenly there's a couple of "militant feminists" in the books. The question about LGBT characters and kandra as well. Suddenly there's talk about genders.
Why should that kind of thing bother someone else but this should not bother me? (I don't want to discredit that reddit thread, it does have some merit to it. Discussions about Elend but also about Vin from Elends end could get a bit too much at times)
So I came here to discuss it, listen to what others have to say. Maybe I missed something, maybe I misunderstood and mostly to understand a bit more about Brandon and how he works which will ease my worries about his intent. Is he really writing this because he feels like it or is it because someone called him out on it and he's worried about that happening again?
That's my honest answer. As I said before, I don't want to convince anyone of anything. It's just how I feel.