That was me and it is true. Even if you follow spec and do everything right. You can't account for cars and trees slamming into it or a surge pushing houses into it or 280 mph tornadoes spawned on it.
Most of the places I've seen them brag as cat 5 houses are just 6-12 inch concrete dome shaped to basically give the wind less surface to push on. It's have to be a fortress before I felt safe in it, maybe even a watertight room with it's own air supply.
Funny thing, when Eduoard of whatever the fuck it's name was came in Daytona in 2002 as I sat on the balcony, we had asked the front desk about the doors/windows which looked new. Oh no no, he said, cat 3+ rated. While I sat on the balcony( 50-60 mph winds ) the door came off the track and fell to the floor inside. It was even closed.
