Skimpy clothes can be stylish too. I don't really know of a modern TV series that goes that route anymore. So many things died - look at Married with children, the first five seasons. Such jokes are simply no longer made. It's strange how the world changed.
On youtube I recently had tons of auto-censoring where f*ck was removed in the audio with a bleep silent sound, but in the subtitles or in-titles, it was spelled out just fine. I hate censorship.
As for sexism, well - a male audience is more interested in certain elements. How high was the female audience percentage? Most probably were bored by the repetitive nature of that series. Always UFO and aliens. Dallas on the other hand, as TV show, had more elements, so a wider range of people were interested in it.