If their prep was focused on FAANG-style Leetcode Interview, I'd guess they were pretty upset when you asked them other things.
But they're not upset when some interviewer tells them to do Leetcode whiteboard performance art, for pieces they've hopefully memorized but will pretend to be approaching for the first time, as a hazing ritual, and the interviewer, briefly feeling in a position of power normally denied them, says, "I want to see how you think", as if the interviewer can actually discern that.
People are accustomed to having their ducks lined up for them, and they just have to do the things they were told, and then they get the big paycheck, and they get to be the one hazing the new pledges. You're not playing along with the system.
But they're not upset when some interviewer tells them to do Leetcode whiteboard performance art, for pieces they've hopefully memorized but will pretend to be approaching for the first time, as a hazing ritual, and the interviewer, briefly feeling in a position of power normally denied them, says, "I want to see how you think", as if the interviewer can actually discern that.
People are accustomed to having their ducks lined up for them, and they just have to do the things they were told, and then they get the big paycheck, and they get to be the one hazing the new pledges. You're not playing along with the system.