If you have one and wish to try it, you could plug it into a powered hub or other USB power source.
I have added cooling on all my WD hubs and think it is a good thing, but would not power the fans using the WD.
The USB ports are more valuable as added storage, even though the voltage should be OK, the amp draw may/could add more demand to the internal power supply… Could work, but better with external power. IMHO