I find that to be mostly hyperbole. I've installed Vista on 8 computers and the only legacy device it wouldn't run was a web cam (because Logitech didn't create drivers for it). That's about par for the course - when I installed XP many years back, the only thing it wouldn't run was my favorite scanner (HP's fault).
I’ve got Vista on my home computer and have had zero problems with any software or hardware installations I’ve added, including a Logitech web cam. I keep hearing about the horrors of Vista, but I love it.