I personally think honestly disclosing rather than hiding one's subjective values makes for more honest and trustworthy journalism. But no journalism - from the most stylistically 'objective' to the most brazenly opinionated - has any real value unless it is grounded in facts, evidence, and verifiable data.
The implications of likability are long-lasting and serious. Women adjust their behavior to be likable and as a result have less power in the world. And this desire to be liked and accepted goes beyond the boardroom - it's an issue that comes up for women in their personal lives as well, especially as they become more opinionated and outspoken.