I think that touches on one of the problems with hiring in tech. People tend to think things they learned earlier chronologically are simpler or more fundamental and necessary building blocks in order to be competent at the things they learned later. So we have programmers with CS backgrounds rejecting programmers without who would be perfectly capable of doing a particular programming job because they get tripped up on some algorithm or data-structure quiz that has no relation to what they'd actually be doing on the job (and could be quickly learned if and when it did).