Among these less than fifty Dragon Blood Fruits, the oldest one was only 999 years, still several months shy of a millennium.
One could guess that John Tros must have accelerated the time in this secret realm as soon as he obtained those Void Crystals, but due to what was probably a shortage of crystals, these Dragon Blood Fruits hadn't fully matured.
Let alone Dragon Blood Fruits that were over three thousand years old, even those that prolonged life by ten years— the millennium Dragon Blood Fruits—were lacking somewhat, requiring a few more months to wait.
To this, Song Chi felt it was only to be expected, considering that the Void Crystals he provided were at their highest First Rank, with the vast majority being Zero Rank. If such low-rank Void Crystals could accelerate a secret realm for tens of thousands of years, that would indeed be too far-fetched.