Yeah, porn is not a profession. It seems that people these days use the term loosely. I remember one of my professors saying that a profession is a vocation that requires a formal period of education. There needs to be tests of competency during or after the period of education to prove the candidate is competent to perform the duties involved. This is the traditional definition of a profession. The only way I can foresee why people would agree that porn is a profession is because they are using the term differently.
8000 years before Jesus, the Egyptian god Horus said, "I am the way, the truth, the life."