Indeed, all that would do is make me walk out and say good luck with that tactic. I'll find somewhere else to work.
> I always preface these sections of the interview with a moment to explain that I expect them to push back and disagree if I say something they think is wrong so that we can talk about it.
I interpreted that as, at least implicitly, flagging to the interviewee that not everything the interviewer says will accurately represent his/her views. Perhaps it could be made clearer, but it doesn't seem like the intent is to deceive.
That's pretty much the definition of a liar and outright deceptive.
Besides that, the tactic of trying to be debative and in this case outright dishonest and slightly combative is an incredibly terrible method for interviews.
Honestly the poster should be banned from giving interviews.
It seems to me that you've jumped to a very strong conclusion, based on a brief conversation that you have interpreted in the least charitable way possible.