I think the funny thing about bbq is that we all have our methods and beliefs and we dont always like it when someone challenges those methods, even if with science. I think one of the posters above got it partially right saying that this guy writes things for attention ............. but if you have a website, you need attention. But I also think that he writes provocative headings or statements to get your feathers ruffled but if you read the rest, it is not as harsh as you may think. For instance he shows that more liquid might be lost but you may also loose crunchiness of the crust or heat of the food. Or you may heat past your desired temp. All trade offs that we get to decide for ourselves what works best for us. In other words, I dont think he has said anything incorrect, just different from our opinions maybe.
Here is the way I see it. I have always been told you are supposed to rest the meat. This guy challenges that theory. I dont actually "know" what is right, I only know what I've heard. If I really want to know for myself, I need to do my own experiment. That's really the only way, right? And even then, it is no longer science but rather which method I like better, which is more important anyway.
So I dont see the article as right or wrong but rather thought provoking and another possible idea to make me a better cook ............. or not. In fact, the most important statement in the article basically says that cooking the meat to the right temp is the most important part no matter what else you do. None of us could disagree with that.
That said, I agree completely with him on beer can chicken. In fact, this is definitely not the first article I've read on the subject. But I have found from personal experience that I prefer the unmolested bird. I am able to get more flavor to the inside of the bird whether it is vertical or split. That doesnt mean I wont do a beer can chicken or that no one should. It is still fun to do when you have people over but I firmly believe other methods are better and have never bought into the "adds moisture" thing.