Some manufacturers refer usb 1.0 devices as highspeed usb device because they are faster than serial or paralle devices. So you should specific what you mean. Do you mean usb 2.0 vs usb 1.0?
What is high speed usb device he is using. Only devices such scanner, hard drive, external CD/DVD drive need usb 2.0 port, other devices such as mouse, printer, digital camera do not need usb 2.0
Of course, he can get a usb2.0 hub (pricewise not much different from usb 1.0 hub). But usb 2.0 hub will work as usb 1.0 hub if only one of devices plug into it is a usb 1.0 device. You may think 4 usb 1.0 could share a usb 2 hub, but this is not the case. There are some usb 2.0 hub offer real usb 2.0 even one of device is usb 1.0. But they are not easy to find and even manifacturers do not really know about this.