Because steam_emu.dll (the engine that reads this INI) uses a technique called . It literally forces itself into the game's running memory to intercept calls to Steam.

: The most reliable way to find template versions of this file is through established Steam emulator repositories like SmartSteamEmu on GitHub or the Steam-Emulator-by-CODEX project.

If you’re interested in legitimate game configuration, I can help you write a blog post about: