This is true. Unfortunately AROS doesn´t suport any hardware I ever used in my life. I tried. Even at work.
So the point is not wheter it supports all hardware.
The point is whether it supports yours.
BTW. The same is true for MorphOS. While I owned about 8 Macs in my life, none of them was on the list. And I always bought the most recent popular models from 2000 to 2008.
I keep checking AROS occasionally.
Some day, I'll dig around for cheap old hardware from the supported list, and put together a little AROS machine, but for now, it refuses to play nice with my computer.