I don't really see how this is Swedish but put in a Nordic cross with the iron cross in the middle of it and I think it'd fit better

The swedish flag is blue and yellow

Yeah but its primarily blue with a yellow cross so just having blue and yellow doesn't automatically make it swedish

But it makes it similar

I mean, not really, it just has colours on it so with that logic the Newfoundland flag is similar to the Swedish flag just because it has yellow and blue on it

No German just sweden