One thing our media never acknowledges is that conservative pundits play under a total separate set of rules than liberal pundits. Specifically, conservative pundits are generally indistinguishable from political operatives. They aren't just writing interesting columns about things they're interested in, they're advancing an agenda, which includes electing Republicans, often with little or no regard for truth. If they can get away with it, and they frequently do, they'll just make stuff up and lie.
I'm no purist. There's always been a place for dishonesty in politics. Politicians and political operatives lie. It's part of it. But conservative pundits notionally don't live in the world of politics, they live in the world of journalism where one would hope the claimed standards of that profession would apply. For some reason they don't.