This has already been mentioned by others but I feel obligated to chime in. Whoever said it wasn't real cooking to use a commercial rub obviously makes their own rubs. Cool. But they then want to make their cooking sound more "real" by trashing others and trying to isolate themselves on the top of their theoretical mountain as "the best," or "the only way"
I was recently at a local hardware store when a sales guy came over to me as I was looking at a Big Green Egg. He said "That is the only way you can cook a good turkey." Me being a diehard weber kettle man, disagreed. This led to an interesting conversation. What I took from the talk is we all want to think the our method is "the best." Myself included. There are so many variables though. Quality of meat, technique, outside temp, seasoning, timing, quality of heat source, smoke wood quality, etc...... Bottom line. We humans are mainly filled with hot air and like to speculate and try to talk ourselves to the top.
This is a fantastic website. What I like most is when people share techniques and methods of cooking to INFORM. For instance, I now love cooking chuckies and have never seen a recipe in a cookbook for smoked, pulled beef. I have been informed without being talked down to by several great threads on the subject. Occasionally people seem to want to stir the pot with isolating methods as "good" or "bad" or "real" and "poser." Those don't seem to make constructive posts.