If only this were true. I've co-authored a (technical) book, edited another, have dozens of OSS contributions, and GitHub projects with hundreds of stars. Everyone still tries to whiteboard interview me. Usually I tell them to screw off, but still. My theory is that (a) people are too lazy to come up with better hiring processes and (b) there's a prevalent "if it ain't broke" mentality so there's little motivation to do anything about it.