You are making a worldwide change, not in those countries only. The language doesn't mean you only need to discuss with countries using it as the native language. For one thing, there are speakers around the world as well. 
Let me give a simple example of a problem. It seems `description:*=` only refers to the script, not any differences between the 2 countries. Then `description:zh-TW` etc should rather be changed to `description:zh-Hant=` etc. An exception would be those `=monitoring_station` that actually use different words "空气质量" and "空氣品質" in them. 