From what i just read you’re simply assuming that everybody has fled Oman’s shore. The story simply says MORE people fled and 7,000 from one place. Please give us your source for how many stayed, since you seem to know.
Remember that a lot of people didn’t flee the Alabama or Mississippi gulf coasts, either. It wasn’t just NOLA.
Once again, the fact that Oman has NO experience with hurricanes yet so many are evacuating shows how much apathy there was towards hurricanes along the Gulf Coast.