Suspension of disbelief required even in an uber-realistic simulation like DCS. You're just not going to be able to create historical scenarios down to the smallest of minutiae. That said, the UAE wasn't a big player in the Tanker Wars, so Strait of Hormuz scenarios aren't marred by the fact you can see the Burj Khalifa in a scenario taking place in 1988.
Even if they don't have the pre-1993 variant, still plenty of action for the Strike Eagle over Iraq from 1993 - 2003.