It's funny to see facts from ten years ago trotted out as if they were current. I recall, back in 2001, waiting awhile for a shell prompt when a dd was running, but it's been quite a few years since I had such an experience. (Even BeOS would stall when it was thrashing its swap file.) It appears that the main reason for HaikuOS to exist evaporated before long they finished it.
The smartest thing for them to do now would be to implement a BeOS system-call emulator, a la Wine, to run on top of Linux. Or has that already been done?