Why there? I have enjoyed many visits to the island, and was under the illusion that it was there for everyone to enjoy. I could be wrong, but it would seem that it is probably going to be out of bounds to casual visitors in future.
On the flip side, the island is man made. So I guess whoever made it must have had a good reason to pop an island right next to a massive new shiny international airport, and this is probably it. In which case, the owners can do what they like with their island. Well there ya go, I have answered my own question.