The thing about graphical interfaces is that a lot of the lack of standardization is purely cosmetic. A context menu may have rounded corners, or a black background and so on but the user doesn't have worry about these differences.

Cosmetic differences in CLI applications are actually important to get them to work in the first place. dash vs double dash, equals sign or no equals sign. CLI parsing is completely nonstandardized. Each command reinvents parsing and is completely unpredictable.

The only way you could possibly solve this is by letting the shell parse CLI arguments and just pass them as a JSON like object to the application. The ship for that has sailed a long time ago.