This bot comment adds nothing of value and only wastes page space, which is actually an improvement over the bot's typical function. MBFC is a threat to media literacy on Lemmy.
Fact-checking is an essential tool in fighting the waves of fake news polluting the public discourse. But if that fact-checking is partisan, then it only acerbates the problem of people divided on the basics of a shared reality.
This is why a consortium of fact-checking institutions have joined together to form the International Fact-Checking Network (IFCN), and laid out a code of principles. You can find a list of signatories as well as vetted organizations on their website.
MBFC is not a signatory to the IFCN code of principles. As a partisan organization, it violates the standards that journalists have recognized as essential to restoring trust in the veracity of the news. Partisan fact-checking sites are worse than no fact-checking at all. Just like how the proliferation of fake news undermines the authority of journalism, the growing popularity of a fact-checking site by a political hack like MBFC's man behind the curtain, Dave M. Van Zandt, undermines the authority of non-partisan fact-checking institutions in the public consciousness.
Just like every good lie has a little bit of truth in it, MBFC wouldn't be able to spin its bullshit as well without usurping the credibility of real fact-checking organizations.