Without bothering to go int the details of the individual decisions mentioned, it is clear that the arguments Shahar uses are wrong. Whether a decision or ruling is right or wrong for those who accept it can only be evaluated if you know what would have happened had a different one been adopted. The Torah sages do not claim to be right to be all-knowing but that God influences their decision making and causes them to say what he wants said. If you want to discuss the workings of divine intervention Shahar at least take the time to read up on how it is supposed to work.
German accused of joining ISIS in Syria deported by Turkey (AP)
from the article: How great are the words of the sages?