It's just an expansion of the distrust all government and institutional organizations have accrued over the past ten-ish years since the left started becoming more and more authoritarian and unhinged. They just can't help making every single faucet of life some kind of political point scoring game, and the more they do it, the further any trust in anything they have a hand in is lowered, to the point where I can't name a single non-biased one that functions independently of ideology.