That is one explanation for the phenomenon, but I was actually referring to the sibling comment's note about many applicants being unable to code fizzbuzz durin

That is one explanation for the phenomenon, but I was actually referring to the sibling comment's note about many applicants being unable to code fizzbuzz during on-site interviews (if you haven't read it, then I encourage you to read through the blog post that first, I think, brought the issue to many people's attention; https://blog.codinghorror.com/why-cant-programmers-program/ https://blog.codinghorror.com/why-cant-programmers-program/).