Employees who watch their management team always looking stressed and under pressure (i.e. overwhelmed) never want to be them or have their jobs. It stunts personal growth as a culture in a company.
By revealing aspects of your personality, you give a strong indication of whether you will make a good hire. The interviewer wants to know what makes you a better choice than another candidate with the same experience and skill set.
As a candidate you are being asked to spend this time so that you can continue to be vetted before the official offer is made.
In today’s world of free and easily available information, there is absolutely no reason for a job candidate to be unprepared for an interview
Your future career is not worth the few minutes of satisfaction for saying the words you’ve been holding back.