I've too many wacky interview stories to list here, but the first time I came to this same conclusion was when I had an interviewer interrupt me mid-answer to correct my pronunciation of "idempotent" (because I said it in what is apparently a more British fashion). I asked him to repeat himself to see if he'd apologize or brush it off as a tic and he repeated himself with an elevated level of contempt. I declined the offer, that company got bought by McKinsey a year later, and everybody lived happily ever after.
A long time ago, maybe 2016, I interviewed at Paperless Post. The interviewer asked me explain the concept of a promise in javascript, then asked me to implement it from scratch, then asked me to extend it with different features like promise.all.
About 45 minutes into doing this I decided that any company that screened candidate like this was not somewhere I wanted to work so I told the interviewer that I didn't think this was the right fit and I appreciated them taking the time to consider me for the role but I wouldn't be continuing on.
I'll never forget he was like, "But you're doing great!" ... like yes, I know. I'm not stopping because I'm failing, I'm stopping because you are.
I had an interviewer once interrupt me and say that there was no way I could remember the techincal details of a 10 year old project I was the architect for, thus any details I did offer would likely be lies. Needless to say, I didn't get an offer nor would I have accepted it.
I had an interviewer once interrupt me and say there was no way I would have studied gray codes in college. I still don't know if that was some bias that I went to a "provincial school" in their mind or that they hadn't noticed my Master's degree or that my degree program also involved a lot of hardware and electronics work or just that they didn't study it in college and were secretly telling me how useless their fancy "West Coast Ivy" degree program was for them.
I made the mistake of letting that company bring me back for a second "less technical" round of interviews, but I shouldn't have.
