Yes, the general applicability of these concepts is exactly why they should be emphasized when teaching OOP rather than wasting time on uselessly contrived examples of inheritance.

However, I'm not really sure why your comment is framed as a counterpoint to mine. I explained what it took for me to grok OOP, but I never said OOP alone provides composition and dynamic dispatch. It seems needlessly antagonistic to make this some kind of programming paradigm pissing contest when that has nothing to do with anything I said.