Could be. But I don't see that as a valid reason to have a risky procedure that has such a poor early detection rate - 1%, and (as you experienced) does not detect cancer until it has significantly spread.
And years ago, I read an interview with a retired surgeon who said, "Polyps are part of the aging process for most people over 45 & they are best left alone. Cutting them allows pathways for cells to migrate, along with normally-present bacteria in the colon."
If I'm more prone to colon cancer being diabetic, well all kinds of other BS is marketed to diabetics:
Special diabetic shoes & socks ($300.00/pair shoes)
Diabetic drinks & protein bars
Diabetic supplements
New diabetic drugs on TV ads to Talk to your doctor about. ♫♫
"A little pill with a big story to tell." ♫♫
Blood thinners, daily aspirin, statins & blood pressure drugs strongly suggested, even though my BP & cholesterol are normal.
And dentists asking me to come in for professional cleaning every 2-3 months & also buy their expensive "Diabetic toothpaste & mouthwash."
I would have much more respect for the medical profession if they operated with more honesty & less profit motivation.
But, I realize they gotta sell lotsa drugs to pay for that singin' & dancin'.