What a load of bollocks. Natural cell mutation causes both evolution as well as unwanted side effects, of which cancerous cells are one.

Biologically, this argument makes no sense, it's almost certainly written by somebody not familiar with physiology and just trying to sound poetic. That or a journalists severely misinterpreting a quote or analogy from a researcher, which also happens quite a lot.

Cancers have a gigantic variety of causes, but a purposeful signaling pathway is not one.