My guess is because its written content and few people know each other so taking it literally is the safe option. The only reason I try to keep an open mind on this stuff is because I've been caught out before (half believing everything you hear is tough though). The next watch area for me is Wells' kick to the calf...
I'm the opposite.
Most people when talking about observational estimations are just that, guess work. So if say some track watcher says Joe Bloe has put on 6kgs of lean muscle, I think he must look bigger physically and cut to the eye compared to last season.
If the comment came from some one who is a part of the football club then I would lean more to the exact wording.