The problem is the devil is invariably in the details. It is almost impossible to say something useful about category theory starting from even a modern underg

The problem is the devil is invariably in the details. It is almost impossible to say something useful about category theory starting from even a modern undergraduate mathematics education in less than about a week, because you need to talk about definitions and utility lemmas before that (and category theory is so abstract it's hard to develop an intuition for it). A lot of stuff like topology is more approachable but it's a lot like popularizing the climate research, although less politically loaded; the real theory is much more nuanced than any simple description could be.