Earlier quoted context omitted.
I don't think that's what Apple said at all–they just said the ball is in their court, which means that they want Microsoft to write Bootcamp essentially.
Yeah. Someone - cough cough Microsoft - would need to be convinced to write a Boot Camp Assistant app equivalent (okay), a Windows bootloader (okay), various device drivers for Apple Silicon hardware revisions for Windows (big ugh), graphics drivers for Apple Silicon GPUs for Windows (VERY big ugh). Microsoft will need to very motivated to distribute Windows on ARM for this to happen, even if Apple gives them access…
Wether Apple would develop Bootcamp for ARM or not is purely theoretical discourse until then.