Google is attempting to block the use of side loaders and APK files to download apps outside of their play store by requiring developers to submit their IDs and addresses.

They claim it won't affect side loading, but this doesn't apply to apps that are no longer available in the play store for whatever reason, as well as for people who are region restricted like in the People's Republic of China.

This will affect anyone using apps not directly verified by them, and will restrict the freedoms many users switched to Android for in the first place. 

Clippy would never block your application freedom and claim it's to protect you from malware.