Hide purchases on Apple TV 4K version 2

Hide purchases from the App Store - Apple Support

↳ Use an iPhone to hide apps. Then it will be hidden from the account, including on Apple TV. Doesn’t work for Apple TV-only apps. Purchased apps can be still be re-downloaded, though.

Hide and unhide music, movies, TV shows, audiobooks, and books - Apple Support

↳ Use a Mac or PC to hide content. Then it will be hidden from the account, including on Apple TV.

I do not believe TV OS has the ability to hide purchases. You may want to suggest that at Feedback - Apple TV - Apple