Finns had the blue swastika on their planes since 1918.
From wiki :
on Rosen had painted his personal good luck charm on the Thulin Typ D aircraft. This charm – a blue swastika, the ancient symbol of the sun and good luck – was adopted as the insignia of the Finnish Air Force. The white circular background was created when the Finns tried to paint over the advertisement from the Thulin air academy.[4]
The swastika was officially taken into use after an order by Commander-in-Chief C. G. E. Mannerheim on 18 March 1918. The FAF changed its aircraft insignia after 1944, due to an Allied Control Commission decree[5] prohibiting Fascist organizations and it resembling the Third Reich's swastika.
Imho... another attempt to rewrite history