But the flag was useful to show in the ui where the language setting was. This is especially useful when the language has been set to something I cannot read. I don't know which of 语言设定 and 重置设备 will allow me to set the language back to English. Also flags in the menu means that I can find English easier than 英语
That's why the languages should be presented in their "own" native form (name and alphabet), at least additionally. Which - using the native form and the translation in the current active locale - Apple does, btw., so at least on MacOS your problem does not exist.