You are grossly misrepresenting what that app does.
See the explanatory thread by GrapheneOS linked below. From that thread:
"The app doesn't provide client-side scanning used to report things to Google or anyone else. It provides on-device machine learning models usable by applications to classify content as being spam, scams, malware, etc. This allows apps to check content locally without sharing it with a service and mark it with warnings for users."