"A-ha" moment: The difference between CS and CM

Nicely argued. To me, the key in what you wrote is “people don’t buy what you do, they buy why you do it” which I would argue is within the marketing domain.

The pens analogy works for me: “Content marketers draw on the wall with magic markers, while content strategists use fine pens” because the marketers are creative types who like to brainstorm the concepts, i.e. the “whys”, on whiteboards whilst the Content Strategists have to dot the I’s and cross the T’s with fine pens used to document the strategy of “how” the organization will conform to the corporate voice, style and tone [and how data will be used, reused, etc].
In one sense all posts on this forum concerning the definition are conjecture. It is still very worthwhile in my opinion because we are sharing what we know, or think makes sense, based on our collective experiences and readings. I am confident all will become clear as we progress through the course and we will be able to compare notes of where we are with where we were.