That is definitely true. And a lot of the jobs are jobs that the person would do well in, but the employers don't bother to see it. I know there are jobs that I would have done extremely well in, but the companies were just black boxes. They just sit around being unproductive while they wait for someone to check some arbitrary checkboxes. It'd be like trying to hire a farm hand but instantly reject them because they had only driven a different manufacturer of tractor.
As another anecdote, I applied to a job that I had a project that was much simpler than several of the things I had done in my past jobs. It was a job I know that I could almost do blindfolded, so to speak. But they would literally not even speak to me because I was missing a certification (a useless one, not some real certification like professional engineer or architect or whatever) that they were for whatever reason requiring. I even mentioned to the recruiter that I had had the certification but let it lapse because there was no reason to keep paying for it, and that I knew several people who had the certification that knew the language and area less than me. Didn't matter.
As another anecdote, I applied to a job that I had a project that was much simpler than several of the things I had done in my past jobs. It was a job I know that I could almost do blindfolded, so to speak. But they would literally not even speak to me because I was missing a certification (a useless one, not some real certification like professional engineer or architect or whatever) that they were for whatever reason requiring. I even mentioned to the recruiter that I had had the certification but let it lapse because there was no reason to keep paying for it, and that I knew several people who had the certification that knew the language and area less than me. Didn't matter.