As far as I can tell, it’s for people who already use excel wrong. The examples I’ve seen involve using it to process text in natural language (duh, that’s what LLMs are best at). I could see using it to turn aggregated numbers (calculated using deterministic algebra, not Copilot) into a presentation, if you assemble the facts it’s supposed to use, but at that point I’d just as quickly slap them into our corporate template and not worry about tweaking a prompt to spare me from having to actually exercise any non-technical skills.