During the normal year we have several arabica flowerings, flowers should turn into beans.
One can see it quite fast if it is happening, and I believe that farmers can predict already how big would be next crop.
Next part is maybe nothing more than Brazilian lie, beware!
This year is different than normal one. Prolonged drought has canceled first smaller flowerings, after late rains we had only one, yet massive. This was not necessarily good as trees are stressed by drought and frost, and flowers were dropped by huge amount. Trees are in survival mode, rebuilding leaves, not producing beans. Massive and unison flowering was only problem.
For some it sounds reasonable another ones are cheering and selling massive flowering photos. You have to choose your scenario.