I just bought a StarTech HB30A4AIB, which is a model listed on the README. However, this hub has USB ID 14b0:01ef, which is different than the ID of the HB30A4AIB in the README. I tested this hub, and while it does report that it turned off the power on a port, it doesn't actually turn off the power.

I contacted StarTech and they said the change is likely due to changing chipsets.

We've indeed had a chipset change in 2022: changing from the VL817 B0 to the VL817 C0, as per Via Labs changes have been made to core logic and physical layers, most of these are meant to improve USB-IF compliance.