An article with interviews can give a different impression than a study. Publishers want to sell newspapers, producers want more viewers, but do they always choose to represent the whole picture? I think they often choose to portray what will be more sensational or what they consider "news-worthy." Look at how under-reported famine is, but if someone were to die from a panda bear, it would probably make the news all over the world. Traditional relationships aren't particularly news right now.
I don't doubt some men and women want sex without strings attached and there may be more than there used to be -- i don't know -- but i don't think it is the majority. We could look up research and see, i suppose. I think for most people, love and sex are paired.
I don't think it's necessarily a bad thing to choose sex without strings, so long as they are honest and responsible with their partners. I just think it's tricky, and i doubt there are many people who could have sex with a partner repeatedly and not be attached.