In the context of the documentation "supported" means AMD will dedicate engineering resource to solving your issues, and that only applies to Instinct products.
"Unsupported" doesn't mean "it doesn't run". It means your bug reports are at the same level as every other commoner and could be ignored.
Does ROCm run on gfx1010 (5700 XT)? I believe so. Will you get any traction on bug reports? Probably not.