I have sympathy because I program in a similar way as the author. Not so much with tests but with some kind of fast feedback loop where I do lots of guess-and-check. I don't know how I'd do in this kind of interview.
However...
> If I get behind or the interviewer starts interrupting to ask about the bad code I'm writing I get very stressed and have trouble both listening to the interviewer and trying to address the issues with the code.
My sense is that 90%+ of these interviews is maintaining your composure, asking questions and generally coming off as well-adjusted and personable even if you don't know the answer or get stuck.
> Certainly there are a lot of confident, mediocre tall white men in the tech industry
However...
> If I get behind or the interviewer starts interrupting to ask about the bad code I'm writing I get very stressed and have trouble both listening to the interviewer and trying to address the issues with the code.
My sense is that 90%+ of these interviews is maintaining your composure, asking questions and generally coming off as well-adjusted and personable even if you don't know the answer or get stuck.
> Certainly there are a lot of confident, mediocre tall white men in the tech industry
That's some chip on his shoulder.