OK. Here is the link to the 'article' quoted:
Plane daft! British aircraft suffers as third of RAF frontline jets are grounded | Latest News | Latest Breaking News | Daily Star. Simply The Best 7 Days A Week
The Daily Star Sunday is not known for it's insightful analysis of the MoD. It is a non-story. The likes of 'depth' have been used for several years and were part of the focus on ops and supporting the front line operation. They distinguish the difference between what are activities in support of ops and the front line and what are essentially maintenance activities that were often performed elsewhere at MUs etc.
Accurately identifying what aircraft are available for ops is a very important part of managing expectations of governments when they want to do something with those aircraft.
So - poor article but if you got to make a couple of ill-informed one-liners, great.