> Cancer is easily explained from an evolutionary optimization perspective

Anything that "easily explains" cancer should be thrown right out as unscientific. Cancer is many diseases, many of which are profoundly different from the others in both mechanisms of action and causes.

I kindly ask that you don't use such confident sounding language, either deluding yourself or others into believing your statements as true, when much of what you state is an untested (and probably unfalsifiable) hypothesis.