It's why I probe newspapers on articles on subjects I know more about (in my case, well, physics and machine learning). I see what are the errors, what is the level (and quality) of simplifications, etc.
If it is poor, I don't expect other articles to be of higher quality.
Is it reasonable to assume that a newspaper's contents will have uniform quality? I always figured articles of general interest (politics, big world events that make the front page) were more vetted than articles of niche interest (most science articles). Also, journalists largely have humanities backgrounds, and so news articles related to those topics will derive from that expertise.
If it is poor, I don't expect other articles to be of higher quality.