I have to admit i guessed the same with Akinci model when i saw this pic for the first time which turned out to be a wrong assesment from my side but there are still more issues with the Kizilelma model which makes me believe that its more a display model rather than a working prototype.Act like one how ?
What you are seeing is a method BaykarTech uses to make aircrafts, they fully encapsulate mouldings with carbon-fibre with the underpinnings aluminium/steel structure, wait for the mould to set then go back and cut out sections for access panels and necessary ports for spars to slot through. We've seen this method with TB2, Akinci and here with Kizilelma.
It's actually very clever method in which to make composite aircraft, less screws and panels involved - but a lot of accurate slicing involved.
This
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Became this
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As someone else noted before, the gaps between body and wings are just too wide, obviously no precision machining involved in there, second issue is the rear section where the engine is supposed to be, it still looks too thin, compare it to your picture of F-35, that part is obviously reinforced with metal, its not just plan composite sheet.