Do you know the name of this psychological phenomenon?
I think this phenomenon can be explained by the hindsight bias :


  Hindsight bias, also known as the knew-it-all-along effect or creeping
  determinism, is the inclination, after an event has occurred, to see
  the event as having been predictable, despite there having been little
  or no objective basis for predicting it. ... Hindsight bias may cause
  memory distortion, where the recollection and reconstruction of
  content can lead to false theoretical outcomes.


.


  A basic example of the hindsight bias is when, after viewing the
  outcome of a potentially unforeseeable event, a person believes he or
  she "knew it all along". Such examples are present in the writings of
  historians describing outcomes of battles, physicians recalling
  clinical trials, and in judicial systems trying to attribute
  responsibility and predictability of accidents.


.


  Hindsight bias has similarities to other memory distortions, such as
  misinformation effect and false autobiographical memory.
  Misinformation effect occurs after an event is witnessed; new
  information received after the fact influences how the person
  remembers the event, and can be called post-event misinformation.


.


  There is no solution to eliminate hindsight bias in its totality, but
  only ways to reduce it. Some of which include considering
  alternative explanations or opening one's mind to different
  perspectives. In terms of auditory communication, the speaker would
  try to provide more clarity in his or her delivery and the listener
  may seek greater clarification