if people aren’t evactuating they are going to get more deadly. On top of that increased frequency means less time for areas that are affected to recover before the next one hits. Florida could very well end up effectively uninhabitable due to how many of even “minor” ones they are getting.

Covering windows doesn’t do that much. The big dangers are the wind ripping the roof off, large trees being blown onto the house, and floodwaters rising above the level of the ground floor. I think windows breaking is more of a concern with tornadoes.