Universal's Official Statement Regarding 'Jurassic Park 4'

Well, put the rumors and deleted tweets aside.  Universal has confirmed that Jurassic Park 4 has been put on hold for the time being.

Here is a snippet from Universal's official statement:
In coordination with filmmakers, Universal has decided to release Jurassic Park 4 at a later date giving the studio and filmmakers adequate time to bring audiences the best possible version of the fourth installment in Universal’s beloved franchise.
That being said, wouldn't a more logical approach be to just push the release date back?  Or is it perhaps that now that they're allotting more time for the movie to get made that they could actually go back and rewrite some of the screenplay -- allowing for better FX, etc?

Source: The Hollywood Reporter