That doesn't necessarily follow. It could be that people have on average a fixed amount of "preparedness" per unit time that they will spend on various events as they see fit. Switching from all female names to half female half male might have simply caused more of this preparedness to be spent on the half named after males, but the total amount of preparedness would be unchanged.

Then we can apply suffixes, like "the Terrible" (Destructinator the Terrible).

Then if that doesn't work well enough to change behavior, we can simply lie about the risks (Destructinator the Terrible will kill you unless you take shelter in Canada with 90% probability.)

Hopefully this drumbeat of psychological warfare will cause the coastal residents to move hundreds of miles from the coasts and there will be no more hurricane deaths again.

Then we can start naming tornados after biker bars.