FWIW the A16 Bionic and earlier have a USB block, they just don't have a USB 3.0 block. They added one in the A17, probably porting over from the M1/M2.
For that matter, neither does the BCM2711 on the RPi4. It leans on an external chip -- almost as large as it -- for USB 3.0 functionality.
For that matter, neither does the BCM2711 on the RPi4. It leans on an external chip -- almost as large as it -- for USB 3.0 functionality.