The author doesn't appear to understand the economics of the hiring company; it's about time & effort to filter and the cost of making a bad hire. I cannot give

The author doesn't appear to understand the economics of the hiring company; it's about time & effort to filter and the cost of making a bad hire. I cannot give every application 1-2 hours of review if I get 100+ resumes. This is an entirely self-created problem, not for you personally, I mean for the industry. We are against "credentialling" so signals like personal recommendations, alma mater, or work history at prestigious firms are overlooked. My employer tried Hackerrank for a while, we abandoned it when we realised that the candidates we really wanted (e.g. based on personal recommendations from existing employees) were dropping out of the pipeline as soon as the Hackerrank link was sent to them. And the ones we were getting were good at Hackerrank and not much else.