Shouldn't it be easier to explain a general concept than a specific one? The only reason I can think of why this isn't happening is because you need to learn a large amount of information before any of the category theory stuff can be applied in real life. But honestly speaking, that can't be true because languages like Haskell exist and isn't that on the whole programming using category theory? (I am be completely wrong about this).

OTOH it can also be just a pedagogy issue. That nobody has figured out how to condense it into an undergraduate level so working engineers can grasp basics.