The point of the article, in my opinion, is not to highlight a drop of 3-4 spots, but to signal the school’s continued decline in this ranking (which is highly prestigious and of reference to many). With this latest drop, the school exits the top 100 for the first time (where it ranked for 20+ years since its inclusion in 2004).
Now, as others have said already, this does not make it a bad or less desired school for prospective students and I am sure those who attend will benefit tremendously.