In reply to the Greater Risk article:
Quote from the article: “Inhaling combusted or vaped cannabis products can damage lung cells, may increase viral replication, and does affect the ability to fight off infection".
Quote from the abstract of the journal article referenced in the above quote: "Diffusing capacity in marijuana smokers has been normal, and two studies of thoracic high-resolution CT scan have not shown any association of marijuana smoking with emphysema. Although bronchial biopsies from habitual marijuana smokers have shown precancerous histopathologic changes, a large cohort study and a pooled analysis of six well-designed case-control studies have not found evidence of a link between marijuana smoking and lung cancer. The immunosuppressive effects of delta-9 tetrahydrocannabinol raise the possibility of an increased risk of pneumonia, but further studies are needed to evaluate this potential risk."
In other words, there is no solid evidence that smoking or vaping marijuana compromises the lungs in the way that tobacco/nicotine does or in the way described in the article. If such evidence exists, please point to it.