As I understand, the old way of 'carry the 1' is not allowed anymore...the new way must be diagrammed as shown in order to get the credit. Again, the answer is not important, but the new method is what gets credit.
I don't support the way they "force" the new way upon the kids. But, if you were to ask me to choose between the old way and the new way, I would pick the old way for addition and subtraction, but the new way for multiplication. For example, I find it easier to multiply 29 * 3 as (20 * 3) + (9 * 3), than to multiply 29 * 3 using the old way. I think each kid should be allowed to choose what works best for them, and that it should not be "forced" upon them.
Also, the answer does matter. What's the point of following a method if it doesn't yield the right result? There is no logic in that teaching behaviour.