There are many fitness ‘leaders’ who may or may not have a PT. To my mind, a leader is someone who through their actions inspire us to follow, not someone who has a particular credential. You have to look no further than most well-respected fitness conferences and the many ‘fitness’ presenters to recognize some of the fitness industry leaders. Also, those who write on the subject, many of whom are fitness only professionals. These are just two examples of places where you can easily find fitness leaders. I think that it all depends upon how a person defines the term ‘leader’ and what it is they are looking to learn from that person.