Just read what you wrote:
Radioactivity is all around us, from the sun to the soil which contains radioactivity. Plus that statement ignores the differences in types of radioactivity, such as gamma, beta and alpha, which are all very different with regards to levels of danger. Plus the majority of us smoke cannabis, and that within itself can contain radioactivity as organic compounds combust and one inhales the smoke. Not that I'm of the camp as "cannabis contains more than cigarettes, blah blah blah" DARE propaganda.
Not true at all. If that were the case we'd have no reason to clean the toilet and could just drink right out of it, or for a less dramatic example fuck dishwashers just run it under water and call it clean