I'm giving paper coding tests that make sense to me, and I'm generally very happy with my recruiting. [...] I've passed people who completely screwed the test. I've failed people who nailed it in 5 minutes.
When I read someone saying "I've taken countless interviews, and I don't get a job", I'm thinking: well, either he's been very unlucky (which happens), or there is something wrong with the guy's attitude.
Yeah, must be their attitude. Not the arbitrary and biased test given by an interviewer who doesn't even realize it's arbitrary or biased or that they're selecting for qualities they personally think are important rather than whether the candidate can actually do the work.