I never considered it as a text that attempts to show how quantity is always a kind of quality, so no matter how much you do something, it won't change how you exist in the world unless you change how you do it. What people are really after with weed and psychedelics is that kind of qualitative change, especially at the level of consciousness. But with dependent origination, changing how you in particular perceive the world does not actually change the world that you are a part of, and therefore doesn't lead to qualitative change of experience. What must be done, instead, is to change the world. True liberation is absolute.