The evidence isn't even that strong, there i
just aren't that many people willing to risk becoming a pariah to dispute them.
If you are a Christian, there is no doubt Jesus existed. Any oblique reference to a rabbi who was persecuted hundreds years ago is considered evidence that Jesus existed. But no contemporaneous documentation exists.
If you're not a Christian, debunking all of those vague references that might be proof of a Jewish leader named Jesus just isn't particularly important, won't persuade anyone who believes Jesus was(is) God, and will paint a target on your back for terrorists.