I guess it is because every year they try to create more attractive styles than the year before. Unfortunately, they can't think of anything more attractive other than making it more revealing, when in fact, there are lots of non-revealing clothes but with classy and prestigious style. For me, I still think that long dresses and skirts can be way more attractive than shorts if the proper touches were added.
For example, yesterday I saw this rare view of a girl wearing half-sleeved, long and loose black dress with a light golden floral embroidery that matched her hair color. If she wasn't busy, I was really gonna ask her from where she got that dress. 😮
Define trashy. What I do notice, is that women are using shorter shorts, just barely covering the butt checks. Some look great. but have some class. There are also some other styles that are "conservative" that allow you to show off your body (if that is the intention).
I have no idea, as a man I do kind of like anticipation, but that's just me. Sometimes I like to come home and she's pretty much naked on the counter with this look on her face. Sometimes I like to peel her out of her clothes, sometimes I rip them off (and pay through the nose for new ones but WORTH IT). Depends on the mood really.
Not all clothing is revealing, that depends on a persons taste in fashion. I like modest fashions like fairy kei, Lolita, gyaru, and himekaji because they're not too revealing. However, they are expensive so I don't have a closet full of them. You just have to find what you want.
It's not the clothes per se, it's the way women combine them in revealing outfits. Slut shaming is not good, because it doesn't help the woman in question. I think that baring it all means a person doesn't respect himself-herself, it takes away all the mystery and other people's respect. Plus, if revealing photoes of you end up in social media, it will be hard to find a job in the future.