Like everything else, everything is deadly at large doses. Even water. Alcohol clearly causes stomach cancer too at large doses, yet alcohol is not banned, right? If we were to ban everything that leads to a certain point of toxicity, we would not be able to live with anything around us. Toxicity is factored by exposure, which is why "carcinogenic risk" is not a binary variable.
https://www.cancer.gov/about-cancer/causes-prevention/risk/s...
> Everyone is exposed to asbestos at some time during their life. Low levels of asbestos are present in the air, water, and soil. However, most people do not become ill from their exposure. People who become ill from asbestos are usually those who are exposed to it on a regular basis, most often in a job where they work directly with the material or through substantial environmental contact.
The ones who are at the most risk in regard to asbestos are workers in construction or demolition. And in most countries how they should work with asbestos is now clearly regulated (safety gear and procedures).