Yes, the author has certain interests (not neutral), but the overall message in the article stands firm: Stop lowering the bar to appease students who don't put in the work. I know for a fact this professor didn't have a 100% fail rate. So it is possible to pass his class, and those who can pass, will.
As an example in this case, when you look at other articles, plus the comments of the students themselves, it seems as though it's more than just "the class was too hard", it was that this teacher was largely uninterested in consistency and clear rules and requirements, and that he repeatedly refused to take feedback and make adjustments.
But that doesn't fit the "stop lowering the bar" narrative in the post, so the Post just avoids putting that in there.
The NY Post can lean whichever way it likes, but journalism does have some standards.