The problem with sexuality in the workplace / people's daily lives today is that a lot of the content (commentary, ideas, beliefs, etc.) revolves around objectifying, marginalizing and degrading women—not as individuals, but as women across the board. Now, a lot of sexually empowered women have no problem with discussing sex openly, or being objectified in the bedroom, or even talking about being objectified in the bedroom while at work.
However, the difference is that in those cases, it is always the woman's choice to participate in it. Since they are the marginalized demographic in this matter, the choice should be theirs to indicate what is and isn't acceptable commentary, discussion or behavior in the workplace.
Today's environment is one where it’s _men_ who overwhelmingly decide, by way of majority-reinforcement, what other people should consider to be acceptable or not.
It all comes down to marginalization: we don't marginalize or trivialize people—or their accomplishments—based on the fact that they eat. However, our society does tend to do those things to people based on their gender; specifically, to women based on their gender.
Once we eradicate the culture in which that happens, people can express themselves sexually more freely and without hesitation, in the safe and sound knowledge that doing so won't instantly label them in a certain way that would dramatically (in a negative way) impact their professional and/or social lives—or worse.