Why do people who warn about misinformation still trust mainstream media?

For years I've heard people, mostly people on the left, complain that there's too much misinformation in the world and how we need to protect young people from social media by having more restrictions. Yet these are the same people who believe we should trust the information we hear and see on TV, as if the mainstream media can be trusted to give us accurate and truthful information. Am I missing something?

Why do people who warn about misinformation still trust mainstream media?
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