That is true, but thankfully the FOV slider in game is generous. To be honest, even without any fixes the FOV slider in-game was fine for me with my ultrawide. Though I do prefer using the line fix and then lowering FOV.
Mmm, I'll be honest with you, considering this can already be changed by adding a line in the engine.ini file, I'm just going to stick with that. Rather than downloading exe files from people on the internet 😅
I don't suppose you would be able to provide an option for the GOG version at all?
EDIT: Nevermind... I found that it's possible to just edit the engine.ini file to do this.