I don't know tossing 6MB into oblivion or roughly 16% of the data seems kind of like a "big deal" when you can immediately see a difference in the "untouched" file.
I'm not disputing that a "universal standard" isn't a good idea - it is. That being said converting to DNG when there's proprietary data in the original RAW is not. I think that's where the discussion turned. People simply stated that converting from the original changes the RAW in some capacity.