The detail you aren’t including is that the death rate has improved so much from current treatment options that finding your cancer from a colonoscopy is not as life-saving as before. It is still helpful and prevents colon cancer.
Interesting. I always thought colon cancer was mostly untreatable so it’s news to me that effective treatments exist. And I’m a fairly well read person. And I’ve never heard and criticism of colonoscopies as being ineffective. It’s usually the contrary.