In theory. This up to the manufacturers and they're not doing that, so it's quite different from non-ARM laptops, where this is basically standardized.

It's not necessarily any better on Windows. I've worked with Qualcomm based laptops that wouldn't work without a bespoke Windows image from the manufacturer. I also had one where the "generic" ARM Windows image wouldn't work with it even though it should've and the manufacturer never provided a bespoke image.