I know, I haven’t been hanging around here for a while, but this seems up your alley:
The thing is, shameless lying and ignorance works surprisingly well as a debate tactic. It’s hard to argue with someone who not only has signaled that he doesn’t care what the truth is but is downright proud of how little he actually knows. Such a person is not amenable to being educated. Once the pretense of really caring one way or another about what is right and what is wrong has been abandoned, all avenue of discourse is shut down.