The line in the Kingdumb Misery example presentation says it all:
[allow for comment]
1. How gracious they are to allow you to say something on your own doorstep!
2. They dont LISTEN
3. As one dub told a call "we are not here to debate we are here to preach." In other words they are not remotely interested in what you have to say.
4. They are, as pointed out, incapable of reasoned logical debate, even of holding on to one subject to discuss.
HB