Simulators are only that - things that simulate reality.
...and have all the attraction that simulated sex has to anyone except a committed games playing nerd.
They will never replace the real thing.
Incidentally, although some Level D simulators might be ZFT approved under JAR-FCL, no RAF first tourist OCU student meets JAR-FCL ZFT trainee requirements.. But no doubt the bean counters won't want to know that - or accept compliance with ZFT rules.