This is completely missing the poInt. He was not addressing european leaders, he was addressing citizens in an attempt to prop up far right parties across Europe, using the same argument that worked in the US: "free speech is restrained by your leaders!". And by that, he means hate speech, because everyone can see what "free except for whatever we don't like speech" enforced in the US.
But the fact is Vance was actively trying to influence the results of the elections.