It describes people like me. I went to film school, have watched all the classics, read books on the subject, but my profession is in marketing. You’re a professional scholar on the subject. Magazine writing is, after all, part of the scholarly record.
In this regard, I wouldn't think of you as amateur scholar. I suppose you are an "amateur" in that you don't get paid to do analyze film, but you've been trained in how to do it, and are likely much more of an authority on the subject than the podcasters being described.