Many women are still a bit uncomfortable asking men out on dates, so some of them prefer to arrange to hang out with friends. This is a good way for them to be together without either of them feeling overwhelmed on the date. It gives the couple security because they know there are other people available to help with conversation gaps. For women, they know friends are nearby if the date does not work out.
As society changes, people must come to terms with the new expectations. Changes in modes of personal interaction can often take decades to filter through society, and the new dating expectations are no exception to this rule. Women, and sometimes men, may still feel uncomfortable with the reversed roles. Young daters will have no gender barrier when asking someone for a date several generations from today. When that occurs, people will wonder why anyone ever thought it should be any different.