Keep note that the article is about the use of colonoscopies for screening, which they found only very minimal benefit. But after screening with something like

Keep note that the article is about the use of colonoscopies for screening, which they found only very minimal benefit. But after screening with something like FIT, if blood is found, then a colonoscopy is totally called for. The shortness of the title makes it sound like they may not be effective for anything. The article states it correctly.