Even if this is the uninhibited future, are you really surprised that some people might take offense to you using pornstars for your character images? Or, at the very least, that they'll ever take you seriously?
When I create transmission bars or signatures for my characters, I use a character image that portrays what I think my character would look like as closely as possible. For example, Kaylee Staite, my Order Commander, uses the image of Jewel Staite - an actress. I have dozens of images of that actress, and I've used many of them over the years to reflect slight changes in her appearance or personality, but they're all still the same person. When we had a formal 'ball' for the order/zoners, I used an image of her in a dress. Most of the time I use images of her from stargate episodes, where she appears in a uniform that is believable as a member of the Order.
Your character image portrays what people view your character as. If you use half naked women all the time, people are going to act towards your character(s) accordingly.