The irony is that upgrading the f1 would`ve potentially eased the iriafs logistics burden to a small degree,as replacing the old atar turbojet with the rd33 turbofan would`ve then given you commonality with the mig29s engine logistics train,plus of course a lighter more powerful,more fuel efficient engine.
One honestly has to wonder why they even put in all the effort resurrecting the f1 fleet in the first place if they werent actually even going to bother to attempt to make any serious use of it.
Frankly tho`, I stopped bothering trying to apply logic to the iriaf and its decisions/choices a long time ago.