I think it is important to note that Iggy Azalea is a rapper and songwriter and not just a prominent character in adult entertainment like you are suggesting. That is quite a big difference, I would say.
I have no problem with it. We know that casinos are really supposed to be for adults anyway but I can't find a reason why this would be the future of online gambling. Aside from their suggestive content, how is this unique and innovative compared to other online casinos? I say use it as you will. But there is nothing special here for me.