I only think their mistake is that the third order is learning and the second order is self-study. If you can't learn, you will find the second order more difficult than the third.
But if the third order is not for learning, can you translate it yourself? The news also reported that it took a foreign man 22 years to study the third order alone to recover. So people learned to play the third order according to the method, and the second order was an understatement. Just pretend that you don't have to learn. If you know the third order, you will have the second order. But they couldn't find a way, so they took it for granted that the second order was more difficult than the third.
Anyway, after I know the third order, I can play the second order. Because they all use third-order formulas. Only the second order has no edge. I just need to use the third-order formula with angle.
Moreover, the structure of the second order is simpler than that of the third order, and the change and chaos of the third order are more complicated. People just learn the third order step by step, and then remember the method to recover. It feels simple. Basically, they just learned the methods and didn't understand the deeper principles.