This is just so uneducated.

Do you know how cancer biology works?

Accumulated cell and nuclear damage from an endless assortment of factors cause cells to enter disease states. When certain errant states that regulate cell proliferation and apoptosis begin to accumulate, cell populations begin to drift into the cancer territory.

The number one cause of cancer is life. There are accelerating factors in the environment, for sure, but cancer is simply an error state of our biology. It's the machinery of higher order life breaking down and entering a pattern that doesn't self-regulate.