No it highlights that a right-wing politician known for saying inflammatory things about migrants made a comment for purely political purposes and clearly did not care about the underlying scientific validity of his claim, since it actually does not exist.
Can you source that it is actually legal to say that an ethnic group of people have a lower IQ, in Sweden?
I live in Sweden, and can attest to my own knowledge of the law, whilst not being a lawyer, that it is not legal. Let alone, reasonably possible therefore to have these things published in a journal here.