I'd like to report a partial success in using this on a real mac.
I have a 2014 MBP with a replaced LCD screen. Unfortunately I bought a used screen with an incorrect EDID, so that macOS was not recognising it properly. The resolutions available in the Monitor System Preferences were wrong:
In addition, the screen brightness control was not working, the brightness was always max.
With this program, I was able to partially "convince" macOS that the screen is valid. I now have the usual resolutions of
with the added bonus that aliasing is much better than before.
Unfortunately, the brightness control is still not working. I am using "Shades" for that, but I think it does not really dim the screen, just adds a darker tint to it. So battery usage is still as if the screen is fully on.
Anyway, it is already a great improvement.
Big thanks to the developers for creating this and making it available.