I don't get the argument here. Look at a fashion magazine geared towards women, what do you think the ads look like in those magazines? Marketing copy with attractive people tends to convert better than marketing copy with unattractive people. Are we just supposed to sabotage our own marketing material in order to... what exactly? If sex sells its not because IT is a male dominated industry, its because sex sells to…
If a designer sends me a mockup with sexualized images I am going to be annoyed because it's not professional and I prefer to see what the project might actually look like live.