You don't need TWRP for the ROM to function properly. It doesn't cause any problems. It may be a slight inconvenience for you as you will have to have a computer near you to perform an update via Fastboot.
Just flashed it and everything works like it should. Also the performance of the Control Center is the same as with the white tint so I guess you were right.
The animation of going from the device being turned on to turned off. It just cuts straight to black with no animation. Video example:
https://streamable.com/o20u37
Does any other device have the white tint or am I the first person to complain about it? (don't mind my stupid question)
Here's a screenshot with explanation from Xiaomi
I was able to get a response from Xiaomi regarding the white tint and they said that it's to make the device perform better so it's probably something that is hard-coded.
Looks like it isn't installed. I've installed it now I will reboot. After reboot Mi Smart Hub works again. Thanks. And did you manage to find a solution for the lock animation yet by any chance?