Not sure why this continues to work myself.

I think people get into rhythms and follow the script they've learned. This plays out in the large and in the small. We've all probably had multiple arguments where A says one thing, and B automatically retorts in defense rather than thinking about what we're talking about or even just letting it go. I think a lot of marriages run like that.

People unfortunately think a well spoken response is the same as a truthful response. If the PR flack or representative or CEO seems otherwise calm and unflustered - smooth - then that serves the "reasonable response and explanation" part of that scenario's script.

We are very, very easily lead.

Because it's easy. And most people are lazy; don't have the time or care to think it though. It's PR. And it isn't just politicians who run it.