Four of them are mine and the others belong to my Boy Scout troop (I'm the Scoutmaster). Our troop has really been doing a lot of Dutch oven cooking lately- a couple of weeks ago we had 10 going at once on a camp out.Are those photos of you DO's?
Is that parchment paper on the interior?
Carbon steel seems to be a little more sensitive to losing seasoning with soap and scrubbing as compared with cast iron. Maybe because the pan itself is much less porous and much more slick as compared with cast iron?