This refers specifically to text messages. Also known as "SMS" in Korea.
I figured as much, would be odd if the koreans didn't have a native word for message
English itself is made up of words borrowed from other languages... That's how languages develop.
I'm not sure he was being disparaging. Most Korean people acknowledge these words, rather lovingly, as Konglish.
So what? English is nothing but mostly the culmination of Greek and Latin words
♪It's a piece of the puzzle~ The letters are the only clues to solving hidden mysteries!~ ♫