The F-16's are our oldest active fighter aircraft and we export them to dozens of countries.Why do you suppose that has been the case?
I have my musings but am ignorant to the platform, technologies, support, fueling, maintenance procedures, much less pilot and support teams training requires to operate them. Then the US DOD likely needs to review and sign off. Can’t be just handing them over willy nilly.
Getting them the aircraft really shouldn't be a huge issue. The issue is training pilots and maintenance folks, building up the logistics. Deciding what munitions/ECM/Avionics to give them. Upgrading their airfields (support facilities/runways etc) to handle them.
A time consuming process no doubt but we've been exceedingly slow even designating aircraft for them
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Originally when it was announced I was thinking late spring/early summer 2024 but it's looking like that was way too optimistic.