No idea. I have never worked with the NHS.
But to be accusing someone else of hyberbole when you use it yourself so often is a touch rich don't you think?
I say stuff that is correct and true, then they say they don't believe me. When I don't produce photos (or whatever), they form conclusion I was lying. Very depressing
At the time of writing I hand-on-heart can't think of any untruths I have said in any of my 1600 odd posts ...
I found some examples of hyperbole:
Hyperbole
These books weigh a ton. (These books are heavy.)
The path went on forever. (The path was very long.)
I'm doing a million things right now. (I'm busy.)
I waited centuries for you. (I waited a long time for you.)
It took forever to get here. (It took a long time to get here.)
She ran quicker than a bullet. (She ran fast.)
Bearing that in mind, I also can't think of any examples of when I have used hyperbole - although I'd be interested if you could quote where I have ..

I think when Hatter said 'All massive NHS projects are specced badly' THAT was not hyperbole, it was just an untruth. As the site I read said that hyperbole is written in a way to obviously not be taken as 'literally' by the reader ..