Probably something in the shelter category, e.g. tents, hammocks, tarps, etc.

Also the topic of stealth camping and related opinions about it...

As far as the disagreements go, I see a bunch of them as differences in both perspective and style. In my opinion, there isn't necessarily just one way to tour, nor one ideal set of equipment. There are some choices that may not best suited for some riders but that often sorts itself out fairly quickly. I often learn something when people describe rationale *behind* their choices and so appreciate the discussion.