One of the poignant ironies about mythicism is its popularity among those who style themselves as freethinkers. Such individuals usually have no trouble criticizing apologists for young Earth creationism or other fringe viewpoints, spotting their weak arguments and taking them to task for rejecting mainstream science. Yet mythicists adopt many of the same weak modes of argumentation that they otherwise criticize.
Jesus mythicism serves as a cautionary tale. It is possible to think critically about a great many subjects and yet to shield one area from scrutiny. People tend to be selectively critical.