Such a delay makes one wonder if the entity promising to send really really wants the Ukes to use them and win?
They more fear the creation of an aerial complement to Bradley Square and Abrams Corner. Maybe F16 Graveyard at the junction of S300 and S400 celebrating the 52nd year of F16.
I think tho Russia has attrition numbers on their side. They are NOT in drivers sear here IF the West decides to get off their ass and really REALLY out produce them in artillery shells, pieces, tubes, and especially drones of every kind.