Instead of just saying "But the press is super duper leftist!!", explain why Kast is not a far right candidate and which of his standpoints as described by the 'leftist press' (including definitely non-leftist press) are not true?
Or will the arguments in favour of Kast just remain with "But the press!", like Trump-fans often did? And if so, we know certain people have certain...right-wing views. Which is fine, but in your wording, that should also mean we should not believe it when they call this Boric guy a communist.
I mean, if leftists calling Kast a far-right guy is wrong, surely rightists calling Boric a communist guy is wrong. Or does it only work one way?