Believe it or not, you don't need to have passed the tests or have software development experience to make the observation that people complaining about a process are the ones that don't perform well. I've written and graded many exams, but only ever received complaints from students with C- grades or lower. Funny how that works.
And it's not like software engineering is some magical pony that is different from other white collar jobs. To get into my current PhD program I had to interview with multiple people, take a 4-hour written exam, do a week-long exam at home, and I wasn't compensated for my time. So I'm not that sympathetic to people that complain about tech job interviews.