The provided information does not describe California AB 1043 or any Windows 11 behavior related to OS-level age declaration or automatic blocking of apps that do not support such an API. No statement is given about legacy apps or older games being blocked on Windows due to this law.
References:
- Make older apps or programs compatible with the latest version of Windows
- Games for Windows Technical Requirements: Best Practices for Games on Windows XP, Windows Vista, Windows 7, and Windows 8
- User Account Control for Game Developers
- Generate age ratings for MSI/EXE app
- Filter inappropriate apps and games on the Family Safety app