Please stop making these unfounded assertions. CoreAudio2ASIO is a very thin adaptor layer that allows the Steinberg audio engine to address audio devices using the ASIO abstractions, so that most of the logic can be cross-platform.
Guess what? If you are using Pro Tools then this is a cross-platform application too, and at some point in the application stack it will have a similar adaptor layer that converts its internal APIs into CoreAudio, WASAPI, ASIO or whatever. All cross-platform applications will have a layer which directly uses CoreAudio, and a layer where they have an internal representation, and Steinberg is no different.