Again, according to the US National Library of Medecine, "The disease almost always goes away without treatment." Also,"Most people with Valley fever never have symptoms." Ike Davis falls into this category. Of course, in some cases (see Connor Jackson for a baseball example) there are both more serious symptoms and consequences.
Essentially, the Mets told half of the truth on February 23, that Ike had a lung infection. Now, there's a name for the type of lung infection Davis has. The problem is dispensing information piecemeal. This leads to at the very least, the appearance of deception.
The Mets told a half of the truth on February 23, and then got "busted" for it on March 3. That understandably provoked reactions in the media like this. There is good reason to be sympathetic, to some degree, to that type of disgust by certain beat writers. Whether intentionally or not, the team gave a hand-picked writer and outlet a really juicy nugget on an injury story about one of the team's best players. For an industry obsessed with scoops and being first, this is big.
The baseball point: Davis' prognosis is the same on Sunday as it was on Friday. The fans: know a little bit more. The media: "we were deceived."
If it appears likely that Davis will be forced to miss significant time, then it would make sense to explore first base and roster options in this space. (Hint: Justin Turner is not the answer at first.) Also, there's no indication yet that this story is headed in that direction.
For now, the big angle to the Saturday/Sunday cycle on Ike Davis is a story about media, information and media relations.