Hurricane category 6 could be introduced under new storm severity scale

The average person should not even really pay attention to the category of the storm. That is mostly of scientific concern. It measures the maximum wind speed found at the relatively tiny center of circulation which may or may not have anything to do with how destructive the rest of the storm is hundreds of miles away from the center, as the article points out. That can also depend on things that have nothing to do with the storm itself, such as whether it’s impacting an area with lax building codes that is unprepared for storm surge. People should forget about that scale and focus on what local authorities are saying about the potential danger.

I think you’re in total agreement with the authors of this new system. They’re simply making a new categorization system that is closer to a 1:1 mapping between the classification and what local authorities are saying about potential danger.

It's easier to make the classification a better representation of danger than it is to convince people to ignore the rating and only listen to local authorities.