Most historians don't believe that George Washington really said to his father "I cannot tell a lie." They think that it is a pious fiction invented by Parson Weems in the years after Washington died. Happily, such historians are not considered to have an anti-Washington agenda or anti-Weems presuppositions. Nor do such historians risk everlasting torment in a lake of fire should they happen to guess wrong on the authenticity of the story of Washington chopping down the cherry tree.
On the other hand, when New Testament scholars have the audacity to suggest that maybe Jesus didn't really say all the things that are attributed to him in the gospels, they are accused of trying to destroy Christianity. Moreover, if they guess wrong on whether Jesus really claimed to be God, they run the risk that either Allah or Yahweh will consign them to everlasting torture.