A lot of girls use similar words, i.e. "due to recent experience, event, etc." to screen out ethnic types they are not attracted to. This "recent" bit usually stays on during their escorting career. They don't want to appear as racist.
It's just consumer perception
It really don't bother me if someone does not want to see a type, I can understand preference
There's more integrity to it than putting yourself in a situation where you will throw out your own rules for money and in turn might not give a client the best time possible
There is also a big difference to saying no to a whole group compared to the idiot on the south east board eve who wanted photos of each individual before a meet, that's inexcusable and overly personal