As a casual user of SE I have some concerns about the CoC and the welcoming spirit of SE.
My personal experience is this: More often than not I feel unwelcome (as a novice and non-specialist) because of the kind of my questions and the way in which I ask them.
On the one side I'm told that SE is open and open-minded and aimed at giving space to holism and interdisciplinarity. But many "holistic" questions are refuted for being "too broad","too unspecific", "too unprofessional".
Especially, asking the same question at different SE sites is regularily criticizied for being "rude" or otherwise "bad" - even though it was intended to be just "interdisciplinary". For me there seems to be no reliable CoC that allows me - or the moderators - to distinguish between good and bad ways of asking broad and interdisciplinary questions, possibly on different SE sites.