Seperate Dark Mode from system dark mode in iOS
The dark mode still sucks with blinding contrast, but I still prefer that over light mode. But the functionality to have dark mode local to the app instead of tied to the system light/dark mode not only existed but was then removed.
Stop removing functionality. Change isn't good if it removes things that were already good.
e: this also makes this help page false https://help.twitch.tv/s/article/watching-twitch-on-ios-devices?language=en_US#LightAndDark