Pat Robertson is a false prophet. Why don't other Christians condemn him?

The Bible has harsh words for false prophets.  Deuteronomy 18:20 says, "But the prophet, who shall presume to speak a word in my name, which I have not commanded him to speak, or who shall speak in the name of other gods, that prophet shall die."  Many New Testament passages condemn false prophets.  Matthew 7:15 says, " Beware of false prophets who come to you in sheep's clothing, but inwardly are ravening wolves."  Pat Robertson is the founder and Chairman of the Christian Broadcasting Network and is the Chancellor of Regent University.  He sought to be the Republican nominee in the 1988 Presidential election.  He is a well-known and influential Christian leader.  Pat Robertson said on TV that God had informed him that Mitt Romney would twice be elected President.  That false prophecy is on the first video below.  In the second video Pat Robertson gives his predictions for 2014.  He says that in 2014 the Republicans will take over the Senate, Iran will develop a nuclear device, there will be a credit crisis, Islam will be in retreat, and it will be the greatest year ever in the history of the Christian church.  If some or all of these prophecies are proven false, will many Christians condemn Pat Robertson as a false prophet?  I doubt it.  I don't expect them to stone Pat Robertson to death in accordance with Deuteronomy 18:20, but it would be refreshing to hear some harsh words in condemnation of Pat Robertson on Christian TV.  Given his past false predictions, you would think Pat Robertson would be humble enough to admit the error of his ways and cease making predictions.  But he is not in the least bit humble.  He thinks he is a modern-day prophet of God, a 21st century Isaiah or Jeremiah.