There is a difference between a hackathon and a restaurant. There are actually restaurants that hire very good looking men also because they are going for a certain clientele. Sexuality sells a lot of things, but that's hormones and money.

The problem here is that a goodly chunk of people expect the clientele of a hackathon to be developers. Developers are men and women who are professional. As much as sexuality sells beer, food, cars, etc., it is not a accepted selling point of professionals. Rather, it will get you in serious trouble in many professional environments.

Now, it is revealed that this company's fantasy event is programming while being served beer by hot women. This basically puts them in the frat with a big no hire for women.