For me it's not even about pro audio, video editing, graphics or artwork.
If the iPad Pro can somehow dual-boot or virtualize ChromeOS, then I'll be happy. Over the years, the only reason keeping me from abandoning my thin&light 2-in-1 ultrabooks and instead fully switching to something like the Galaxy Tab S7+ was the absence of Desktop Chrome browser.
Unfortunately there aren't iPad Pro quality ChromeOS Tablets that can run Full Android Apps, which is a shame because ChromeOS has 8+ years of promised Android version updates.
I also do audio work, and for that I use a 15" workstation laptop, which I agree with Ishraqiyun that Windows 10 is irreplaceable, and also the extra screen real-estate is needed. The same is true for most STEM related programs used in Labs, Hospitals, Field-work, Engineering, etc, which already has industry-standard x86 programs on Windows 10 which are unparalleled.
However I can't help but think that Apple is looking to make the iPad OS more like MacOS. Because otherwise, this M1 move would be completely pointless.