An interview IS a personality test, among other things. They want to know how you get along with others. It is also an opportunity for HR people to justify their jobs, which are basically non-productive mental masturbation and social engineering.
They want to know if you're a "team player" and will be an enthusiastic lemming, or if you'll create friction by pointing out when the emperor has no clothes.
Remember, all those benefits that they promise you when they're luring you onboard, and which you consider part of your compensation package, will eventually be eliminated or changed to your detriment, and if you are the type of person who questions that, it makes them uncomfortable. Because if you're not OK with that, you'll quit when they pull all their HR funny stuff on you. And it's expensive to replace you.
They don't want someone who is too concerned about being treated with respect. They want a "human resource", not a person. They want someone who will basically sacrifice their lives for the company, always available for uncompensated overtime and other crappy assignments, and who will go along with everything management decrees because of the promises they make when they hire you, which seldom come to pass.
I think you nailed it on the head!!!
The reason I am leaving my current job is that basically, the employment offer they gave me was pure BS. They promised me (in writing) a certian territory. Before I even left training at corporate headquarters, they eliminated a third of this territory. Within 6 months they eliminated ANOTHER third of my territory and GAVE my existing business to someone else and my compensation is based on cumulative revenue.
I don't want to argue that they can change anything they want after they hire you, but I feel this has been a huge SCAM to get me on with this company. This was 2/3rds of my promised territory in the employment offer gone with no replacing it with anything. A hell of a way to treat someone who has already made this company mega bucks with my expertise in the field.