Sure, a too strong media bias gets in the way of useful reporting. But masking their anti-liberal take as pro-fairness doesn't make the MRC any better. At least some media watchdogs, like
Fairness and Accuracy In Reporting (FAIR), disclose
their own point of view, something the MRC chooses not to disclose with the same degree of candor. But if you can't guess their bias when you read their reviews, I guess you don't notice any bias from Rush Limbaugh, either.