This looks like good news.
It is interesting news from the view that historically & statistically, if you add up all the numerous different cancers people are said to die from, approximately 90 percent of them die before the assigned survival time frame regardless both of how early detected and which of the few approved treatments were applied.
Colon-Rectum ( and Prostate for men) cancers were already one of the few cancers with far better than 1 in 10 chance of survival, but improving survival of just this one category is good news nonetheless.
By the same token, it might be a reason for people to wonder if it is simply another combination of heredity / environment / lifestyle stuff passing through their colon/rectum that causes increasing incidence of cancer there.