I finished the whole tree in French and had nothing to show for it either. It really is a fun way to feel like you're learning, without connecting you to the language or culture in any significant way.
It's a useful tool if you're immersed in the language, it's not key to your learning but it can tremendously help.
It's a useful tool if you're immersed in the language, it's not key to your learning but it can tremendously help.