You’re absolutely correct that Korea (and Vietnam I suppose, I don’t know much about their language) invented their alphabet to make literacy more accessible, and I think that’s awesome and a really good feature of alphabet systems. I can even see why that would make people prefer alphabet systems, since accessibility is super important when you’re first learning a language.

I think your cached vs. real-time analogy is spot on. And while you can definitely come up with scenarios where caching is better than real-time rendering, and other scenarios where real-time rendering is better than caching, it’d be difficult to argue that one is unequivocally better or worse than the other.