It may be considered by some to be inappropriate for a family site, but it has been said many times by the site owners that WinCustomize is an adult site.
My personal opinion is, as a photograph it has no artistic merit whatsoever. As a screenshot it doesn't display either an interesting, or innovative desktop - hence it's low rating. It's just another dull and pointless glamour image.
Such 'glamour' images may well be considered to be exploitive of the female gender and devalue the individual as a person. Opinions and moral stances will always vary on such issues.
WinCustomize as a matter of policy has always rejected images which may either exploit or devalue individuals. I suspect this particular image's acceptance is borderline in this respect.