Is there any other field where they give you random brain teasers for an interview? My friends outside of IT were laughing their heads off when they hears about the usual interview process.

I've always had reasonable interview questions. Get some data from an API and display it in a table. Make a class that can store car data and get them by plate number. Make a class that calculates tax based on a bracket system.

I haven't even read the article so I don't know what this is about really but if an interviewer seriously asked me about some obscure xor trick I'd laugh at them.