Even though JJ is one of the original Criminal Minds characters, many fans couldn’t disagree with u/cocochanelism’s assessment. Their lack of enthusiasm for JJ’s presence on the team has a lot to do with a change in her role that happened when she returned as a full-time cast member in season 7. Prior to that, JJ had been the BAU’s media and police liaison, responsible for coordinating with officials in the various locales the team traveled to for their cases. But when JJ returned, she’d been promoted to a profiler, much like the rest of the team.
The promotion was nice for JJ, but fans of the series felt it robbed her of the unique role that had made her stand out from the rest of the team. Redditor u/mccabebabe wrote in and said, “She was unique/different as the media liaison, but when she came back as profiler it was meh to me. We already had five of them.” User u/djdjjsjssisue agreed, adding, “Media liaison JJ was a good character with use and a purpose.” They went on to say that the transition from liaison to profiler didn’t make sense to them: “All of a sudden she was this top tier profiler who we never saw learn how to be a profiler.”
Among those who commented on the thread, there was a clear sense that profiler JJ just didn’t offer anything for the show that wasn’t already there. As user u/forca89barca summed it up, “I never even noticed when she was gone for several episodes at a time.”