So? I'm pretty sure that a ton of people eat foods that are also causing cancer, yet nobody bats an eye. Barbecue anyone? Yes this causes cancer as well, and you get exposed to a lot more smoke that you would by sitting directly next to me while I smoke. Also, vaping has been shown to be 95% safer than cigarettes, so there is nothing wrong with that. More vape, but less damage.
What is ever worse, is the amount of people that are not aware of the benefits of e-cigarettes. I hardly doubt that anyone here will read more than a single page of the report though.
Even though e-cigarrettes and vaping have become extremely popular, there hasn't actually been a lot of scientific research done, the jury is still out on whether they are 'safer'. Vaporizer smoke does contain less carcinogens (cancer-causing compounds) but it still does cause human lung cells to die or stop replicating and may do damage to the immune system as it has been observed that lungs of people who vape can't fight off germs such as pneumonia so good. My opinion is that vaping is much less likely to cause you any long-term negative effects than smoking, but its more likely to cause short-term negative effects, inflammation and certain kinds of lung damage.