Not every plane which has propeller is for ww2! In your eyes it could be on that style but it does not make it propaganda and again does not stop world of aviation to develop and use preliminary training planes.
Pilatus PC-21
KAI KT-1
Embraer EMB 314 Super Tucano
Karayel II developed within 1 year. They have shown it at IDEF2013 where there were experts from Boeing, Lockheed Martin, ... Those experts visited the Karayel II. Did any expert mention it was a plastic one or not! You may criticize the mock ups logically like this one:
http://www.defence.pk/forums/air-warfare/235057-f313-ghaher-mock-up-how-extend-acceptable.html
TFX is scheduled to make it's maiden flight at 2023, after which there are years of testing. The replacement of F16s will start beyond 2030. So the development process which has started in 2011 will result in 2030!
No body said they developed it in a short time. They just used some ready parts to start ANKA testing. The company we are talking about is the 76th biggest company in
defence world. Then why should we think such a company needs propaganda?
It is very naive to think only thing a country could enjoy is nuclear weapon. Who wish to be like North Korea. I am sure South Korea is ideal for majority. Up to the moment, Turkey's GDP has not passed 2 T$ it is very risky to start nuclear weapon developing considering the west economical threats.