Software language should be independent of the system. Should be abble to change language system in the software preferences and not change the system language. When you have to work with a different language for some web applications, you don’t want to change all the system. Quark does it. You go in the preferences and change language on the sport and Et voilà! it’s done.
I speak french but my systems are always in english as it more practical for the shortcuts and other stuff. I am starting to work with an application that work only with InDesign 2018 French version only. So you can understand that I don’t want to change all my system language only for that.
Thanks for taking care.