Kate not just uses the same shortcuts everywhere. But you are right that it has issues to be properly adjusted to macOS.

On my Mac Mini I used for the screenshot I just followed the linked howto (one can even just use the system Python with the latest macOS)

https://community.kde.org/Get_Involved/development/Mac

And yes, that needs initial effort, that is true. One can for sure improve this, but that needs volunteers.