I can't see why anyone would be against decoction. It works great, but it's a royal pain in the butt to do.
I don't think they are against it, many just feel it doesn't give you the bang for the buck when compared to using specialty grains to accomplish similar results.
Just my 2 cents and it don't account for much but this just blows me away... Denny aren't you the one who was telling me a few months ago and anyone else who would listen about how fantastic a Decoction Mash was and basically took over the conversation? Hummmmm......... Remember when I was asking why everyone was always asking me why and making such a big deal when I said I stepped mashed and you got into how you have ran all the triple blind taste tests and such... And now you say it's not all that...
Obviously, Denny can answer for himself, but in the six years that I've been acquainted with him online (through both the NB and AHA forums), I have never heard him espouse the virtues of decoction mashing. I have always understood his position to be that he has found no appreciable benefit to doing a decoction mash, but that others should try it for themselves to see if their opinions differ. In other words, his position has been completely consistent with his comments in this thread and others on the subject.
+1 In the 2 years I've been reading posts by Denny, I've learn he is very consistent with the advise he offers. While he has strong opinions on many topics, he will always recommend that you try things for yourself and draw your own conclusions.