Just to clarify - you are talking about Unit 3, Lesson 9, Puzzle 4 where the numbers increase at the same rate as the font size? I agree with you - I felt my students needed to see the character/sprite move and then we could swing back to show the change in font size as the counter increases. Remember - you know your students best. If you think another way of introducing and reinforcing an objective from the lesson would be best - do it and maybe use these lessons for any students that need additional supports.
Let me know if you have any other questions!