In striving to avoid intense living of all types, Yangism wishes to preserve the essential nature. Since desire is the emotion which leads the individual towards these things instead of away, it is the real culprit, and must be purged. However, nothing in these concepts directly disagrees with Daoism. Sounds deafen the ear. Flavors numb the taste.
Thoughts weaken the mind.
Desires wither the heart. The real difference here is more a matter of degree than anything else. It is easy to see this tendency in the discussions of life, death, and longevity found in the Chapters. The principle reward for righteousness is longevity, in the eyes of Yangism. This is one of the central breaks between Yangism and Daoism.