There are plenty of lingerie and costumes for all classes, sure, but so far only a very few have been released in Scarlet Blade. Most of those that you have shown in those links are from Queens Blade. Most (if not all) of those will be released, but currently the ones available are rare and hard to find. If they weren't there wouldn't be this commotion.
A lot of people who play Scarlet Blade have had experience with many MMOs, and as such, are good at getting highly desirable items. The reason most don't is that the items are not only very rare monster drops, but also very rare gambling item drops. Just getting 1 50 Shades of Black lingerie from the box, is rare enough, without the added requirement of the item requiring the player to be a specific class.
I have (foolishly) bought about 120 of the item that gives you the 50 Shades of Black, and only ever had 1 drop (the wrong one, I might add).