Nice try (and of course there is a loophole in your opinion regarding “swastika” but let’s just skip it since it is not the main argue in this posting) but no matter what the origin it might have been, it is crystal clear that the Nazis have used “Hakenkreuz” as their representing symbol.
And the “rising sun” flag was the symbol of Japanese militarism who partnered with the Nazis(also a historical fact) during the WW II.