The blog post just refers to interviewees saying "I wouldn't want to work with the interviewer" when they mistakenly feel that they did poorly in the interview.
Anecdotally from the real world, when I (headhunter) get feedback from a candidate shortly/immediately after an interview, if they feel they did poorly they tend to add that there were things they didn't like about the opportunity (a person, the office, something). People that feel they did well don't usually go negative as easily.
But I also go back to the employer and get their feedback ASAP, and when that comes back positive I immediately pass that message to the candidate. Assuming the employer's feedback is somewhat prompt, the candidate doesn't get too much opportunity to go negative, and once they "feel wanted" by the employer they usually trend back positive. Offers come shortly thereafter.