The full colonoscopy can reveal potential issues long before they become real issues. The home-sample test can only find things when they actually are a problem. It doesn’t necessarily detect something that could become a problem next year, so if that’s all your doing, it needs to be run much more frequently.
Your colonoscopy evidently revealed that you don’t have anything that is likely to become a problem in the next 10 years, so there’s no need for either test before then.