Dubai overspent and the real estate market crashed. A series of man-made mega projects are in danger of collapse and are now pretty much abandoned.
Environmental concerns, stagnant ponds, and migrant worker rights. White gold Mercedes cars as a the talk of the town. Dubai has some problems.
The visions envisioned by the architects went up in a puff of sand.

The reality is a swamp made by water that does not circulate.