Re: Another "R" - suggestions
I'd actually expect it to be incorporated to a degree into all of those other subjects:
Reading - this is an obvious candidate, as one of the best things about computers is their ability to help us organise, search, parse and reference vast amounts of information. When I was in school, we were taught to do things like scan a text for key terms to find relevant information quickly, use the table of contents, index, glossary and references, etc. All of these tasks can be done more quickly and efficiently with the aid of computers, and it could even be extended to include one of the very few things LLMs are actually good for - extracting and summarising relevant portions of text from a larger body - plus, you then get to teach the importance of critical reading and checking your sources...
Writing - Typing skills and word processors, 'nuff said. Who writes anything by hand anymore? I regularly go for weeks at a time between hand-writing things, and I appreciate I might be an extreme case, and that its still a vital skill to teach, but even when I was in school, the majority of writing was done on a PC, and that was two decades ago. And then there's the plethora of digital writing aids out there, including (whisper it, so we don't upset the cranks like me!) AI. Writing, these days, is an IT skill.
Arithmetic - Do I even need to argue this one? We already had calculator exams well before I was in school, and perhaps there's space here for a segment looking specifically at the use of more advanced stuff like python scripting to solve maths problems? Would seem a good avenue to expose kids to coding, at least.
The key thing here is that, digital skills aren't a thing. We need to teach kids to approach things and think about everyday tasks and problems in a digital-first context, not keep treating them as a separate class of skills on top of classical approaches to things