We can talk about how it assesses factuality, but it’s not really relevant to my particular use of MBFC, since I quoted how the media of the OP is funded, which is incredibly relevant.
The existence of op-eds and their content is a useful indicator of where a particular media entity sits. Their editorial standards also reflect the kind of language a source routinely allowed. It’s a good indication of what the outlet is willing to publish.
What is your critique with how it states it samples? It’s a sample of a media source for a qualitative and subjective assessment. I, too would like to know more about how it samples, but I can also see the framework that it follows to assess factuality and confirm or dispute it through a quick look at the headlines and by skimming through some stories, if it seems warranted (though I admit, when it comes to sensationalized headlines and incendiary language, or an obvious government agenda I won’t necessarily do all my due diligence to assess a media source… like I did with the OP).
As for your specific concerns about factuality, you chose some random articles and engaged with them specifically but didn’t link them here, so I’m not going to do your job and go and find the thing you’re talking about.
To your last comment: it’s not always trivial to do the legwork. There is a lot of media out there, and it’s just getting more and more overwhelming. MBFC is just a tool. You have to be aware of the dangers when using a tool. Your critiques are all somewhat valid, but you’re advocating for throwing out a useful tool for media literacy because it’s not perfect.