Except that's only the layer placed on top of the actual glass floor. It's there so they can replace it when it gets scratched and worn, rather than having to replace the expensive floor itself.
Alejandro Garibay and his brother and cousins were sitting on the floor for a photo when the glass started to crack. The irony is that only a few moments earlier staff had told them that the floor was able to withstand 5 tons and was unbreakable.
Except that's only the layer placed on top of the actual glass floor. It's there so they can replace it when it gets scratched and worn, rather than having to replace the expensive floor itself.