you need to update your information my friend, Iraqi F-16s are operational and bombing ISIS, they were grounded due to lack of spare parts and maintenance before but now all is good and they're back to action.
TB2S are not rumors because Iraq allocated 100 million dollars to buy them, how much did Iraq allocate for JF-17s by the way? zero.
Iraqi Chinese CH-4s suffered from crashes, lack of spare parts and maintenance, that's why they're not operational and in storages, Iraqis think getting them airworthy again is a waste of time and money because turkey offered to sell them advanced TB2S which Iraqis think they're more advanced than the CH-4 UCAVs. furthermore if what you said is true about Iraqis incompetents in maintenance, don't forget that they were trained and supervised by Chinese advisors. ( no disrespect here ).