"Writing Korean is easy."

Translation: 한글 쓰기는 쉬워요.

[GeorgiaFil5]

True.

[hippietrail]

Learning the hangul alphabet is easy. Learning to write Korean requires learning to spell which is surely easier than English but is a lot more work than just knowing how to write the hangul letters.

I don't think the English are Korean here are equivalent as translations.

[Ivitcyex]

You're absolutely correct.
Saying "writing Korean" in English implies much more than just writing the alphabet.