Purity is not Focus

I started reading the book based on Rabbi Noach Weinberg's famous 48 Ways classes and stopped when I got annoyed with the "purity" chapter.

Rabbi Weinberg developed a curriculum on the mishna in Pirkei Avos which lists the 48 ways needed to acquire Torah. But, as I agree with Rabbi Dovid Orlofsky, the mishna refers exclusively to acquiring Torah, while R' Weinberg uses it as way to wisdom and success in life in general. So his class on tahara is used to discuss focus,which is definitely not what tahara is about! He lost me there ...