Let us hope that "ICT" is dead and buried
I do not think you have dealt with my challenge to your assumption that technology has changed core subject disciplines. A music teacher may wish to use MIDI software as a means of teaching music - but the aim of the subject is not about learning about MIDI software, but rather about understanding the nature of music.
The call for subjects to "reflect real world disciplines" (a little like the call for "authentic" learning) strikes me as risking bringing ephemeral, vocational training into the classroom, and failing to address the abstract transferable understandings that will equip children to navigate the rapidly evolving technological landscape. These are good teaching techniques but they do not impact curriculum aims.