When PCI replaced ISA (which was prior to USB taking off), dealing with IRQs and DMAs was a thing of the past, making that a poor reason to say USB is superior.
Uhmm... I guess you are correct. I indeed remember going from PCI to ISA. Also to AGP! oh my.. the speed of that thing. But I think the point still stands, maybe not that much with that specific example, but how about PS/2 keyboard and mice?
Woops... disconnected the mouse/kb by mistake? off you go rebooting the computer. I think that does indeed make it a good reason to say USB is superior.