What an incorrect correction! The commenter's point was: instead of considering a block cipher (AES) as a primitive, developers should consider a higher-level a

What an incorrect correction! The commenter's point was: instead of considering a block cipher (AES) as a primitive, developers should consider a higher-level authenticated encryption construction, crypto_box, as a primitive. What you're talking about is a different implementation of crypto_box, which uses AES-GCM with tag included along with ciphertext.