I would think that believing Jesus didn't exist would be just as absurd as thinking that all or almost all of the events in the Gospels literally happened. Yet the latter make up a significant number of practicing Biblical scholars. And for the majority of Biblical scholars who don't think the Gospels are almost literally true, still have a form of Jesus-worship going on as they are practicing Christians. It would be hard to think that Jesus both came back from the dead and also didn't exist; meaning that it would be very hard to remain a Christian while also claiming that Jesus didn't exist, and most Biblical scholars were Christians before they were scholars.

The field both is biased in a non-academic way against one extreme position while giving cover and legitimacy to the opposite extreme position.