I think I get where Xue is coming from because my experience is simliar. All those things you mentioned were there but they were pushed, as it were. Its not like we all lined up and recited an oath or set of guiding principles as some TKD and Karate schools do.
My teacher created a set of guiding principles for his school, but they were never discussed, they were part of what we did. They did occur on the first page of the curriculum handbook, but that didn't mean we had to read them.
My teacher's teacher was, and is, always referred to as Chan Lao Shi (Teacher Chan), but no big deal was ever made of it (to this day I still don't know Chan Lao Shi's full name, and due to certain circumstances the lineage cannot be traced so our style begins with him even though he was not the founder). It is just part of the whole structure. Its not something that stands out and seems added on.
The most overt thing we did from an ethical/moral/philosophical point of view was a written test requirement at one of the higher level to know something of Taoist philosophy.
I think what I am trying to say is that is CMAs the ethical considerations, whatever they may be, are rolled into the nature of Chinese style teaching so they are less obvious than with Japanese or Korean style teaching.