The ad may or may not be sexist. That is debatable and obviously, people will have opinions about it.
The bigger issue here is the sad fact that the new millinnial age journalistic standard goes like this: a young everyday woman, hurrying off to where ever, peeps something on the subway that she has a reaction to and hastly tweets her opinion about it, and then Channel 7, Channel 9 the NY Observer, and the Washington Posts (among others) come calling, asking if they can run with the story. And then said young woman can sit back feeling warm and satisfied that everybody is talking about her and her viewpoint. And the established media loose more and more credibility everyday.