https://www.google.com/maps/place/J...ffa03c545d97b9!8m2!3d21.2305071!4d-86.7370618
So here it is on Google Maps, and this is why it hasn't been destroyed except for "once". It's in a fully protected, shallow lagoon, not on the open water, and it's hugging right up against the land where it's most protected. Being close to the coast doesn't protect you from storms; the waves are just as big near land, and there's rocks everywhere. For a normal vessel, during a heavy storm, you're actually safer the farther away from land you are, if you don't have protected waters.
Really, flipping isn't the main danger I should have brought up. Your main dangers are 1) The impact of the waves destroys your island, or 2) The anchors holding your island break loose and your island gets smashed against land. Flipping is still a danger, if you're not in protected waters, because while a normal vessel has quite a lot of it below the water, the appearance of this island is that most of it is above the water. I could be wrong about the possibility of flipping, it is a pretty heavy thing, and there might be more below water than I think, but we're also talking about a floating thing that relies on buoyancy, rather than displacement, so it's very different physics than your normal boat. Being in shallow water will help a lot with your anchors, because angle is important, but that island has a ton of surface area for wind to impact, so being close to land does help there, but then when something goes wrong you don't have any time to deal with it.
You still wouldn't want anything like that on any real body of water, but if you can find a fully protected lake or lagoon, and manage to be right offshore, you're in business. On the ocean, or a bay (which isn't protected from all sides like that lagoon) you wouldn't want something like that any distance from shore.