I don't think that FizzBuzz/similar gotcha-type questions like that are useful, especially since most of them are all over interview prep sites, so I don't use

I don't think that FizzBuzz/similar gotcha-type questions like that are useful, especially since most of them are all over interview prep sites, so I don't use them. But I've definitely interviewed people with impressive-looking resumes who straightforwardly didn't seem to be able to code; they couldn't respond to simple questions ("You mentioned you used Language Y in this project; what do you like and dislike about that language?") or were clearly bullshitting their responses. I've felt insulted at times when I get FizzBuzz in an interview, but I kinda get it. All that said, this is a systematic issue that gets blamed on individual interviewers when the blame should fall on the company. I'm a decade into my career, worked at companies of all sizes, and I've never had or heard of anyone getting trained in interviewing. Outside of informal efforts with coworkers, I've never had a job provide me with a rubric for what I should be interviewing for (shit, I usually find out I'm interviewing someone day-of or day-before). If companies gave a damn about interviewing, I think the process wouldn't be so slapdash, and fewer interviewers would fall back on crap like FizzBuzz.