He really is a horrible speaker without his Speak & Spell gadget; that is why he’s so hesitant to deal with a real free press. When you see him sign something in a ceremony, you get the impression he hasn’t actually handwritten anything since he was in grammar school; watch how un-natural his form seems.
also possible he didn’t learn to write roman letters until he was out of grade school? Not sure what alphabets he would have learned in indonesia.