I see things every day that I don’t like, yeah… for me, the point is not “unnatural” or even “over the top”, for me it’s more the “obese girl wearing leggins and a belly-free top”-thing. But I guess, what you say still applies.
That’s absolutley no problem! Lots of people like my look, lots of people don’t - both doesn’t bother me much, for I like my look quite a lot, and that’s enough for me 
Luckily, my husband and some other “important” persons like it as well^^
But the point is, even if I don’t like the obese girl in leggins (sorry for overusing that cliché, was just the first thing that came to my mind), I wouldn’t tell her that unless she asks me. And than I’d be honest, but kinda polite still. I’d never ever tell anyone that (s)he is gross to me, for I just consider that rude. It’s totally okay not to like… piercings. Bodymods. Chips. Gays. Transsexuals. Kitten. Whatever. But I wouldn’t go around and say that, unless I’m asked. Because it might just hurt people I do not want to hurt. Of what use would it be if I’d tell the girl that she just looks “gross” in her leggins? She’d be sad, she’ll feel bad, and what for? I just walk by, think “eww, not a nice choice of clothes”, and that’s it.
That brings me to…
They might just hear that “simple truth” a lot, and a lot of other stuff too, and it might just get annoying at some point. You posted some stuff that was simply incorrect (and was corrected by two persons who know more about that topic than anyone else here, I think^^), so ultimately, you just confronted them with prejudices they’ve already heard a thousand times. This just does not feel good. To say you feel that something (very private, very delicate, very intimate) about a person or their sexuality or their way of life is gross actually hurts too. Without going into too much detail, I’ve experienced that myself in a different topic (but concerning sexuality as well), and that ain’t fun. It’s totally okay that you think that way, but why do you put that out in such an aggressive way?