If Olaf was a toddler in Frozen, he’s a grade school child in Frozen II.
He’s learned to read, and he is confident that, while there’s a lot about the world he doesn’t understand, it will all makes sense as grows up.
Olaf has grown up in the a bit in the new movie.
Frozen II may not be getting quite as much love as the original, but it’s still largely viewed as a good movie, and for the second time, the sidekick snowman is one of the best parts of the movie.