It's debatably artwork. Every single person has their own handwritten "font" - more than one if you write cursive and block letters. A font doesn't have a message or a meaning, it is just a means for conveying information through text. I'm sure you can produce several examples of specific fonts that qualify as "artwork" (though it's just a numbers game since there are literally hundreds of thousands of different fonts on the web, if not more) but that doesn't prove that every font is automatically "artwork".
We could also make the claim that every drawing is an artwork depending on how we define the word, but that doesn't mean that every nine-year-old who draws an "original character" that's just a green Sonic the Hedgehog should be able to use the legal system to bully other people because he's an "artist".