It’s actually cheaper to use the USB 3 A ports then it is to use the USB C ports. There’s a lot less wiring (and circuitry) that needs to be done for this amount of ports. A full spec USB C port has somewhere between 20-24 pins that are all used if you need USB 3.x speeds. A USB 3 A port has 9 that are used for full data speed. It’s orders of magnitude less annoying to run that many traces on a board and keep the data speeds where they need to be.
Note how they are all old school USB ports, and not USB C.
It’s actually cheaper to use the USB 3 A ports then it is to use the USB C ports. There’s a lot less wiring (and circuitry) that needs to be done for this amount of ports. A full spec USB C port has somewhere between 20-24 pins that are all used if you need USB 3.x speeds. A USB 3 A port has 9 that are used for full data speed. It’s orders of magnitude less annoying to run that many traces on a board and keep the data speeds where they need to be.