It's interesting to me how many people value personal projects. From my personal experience, a confusing Github account with a number of small, questionable projects pushed in one commit half a year ago hurts you more than helps you. Personal projects are fine, but I think many people have the mentality of "getting a TODO app in Angular will help me waay more than implementing algorithms in C, that's useless!" which may not necessarily be true.

> Wouldn't it be better to hire somebody who thought that was lame and who spent 100s of hours learning performance testing, new libraries, design patterns, or just working on projects?

I would hope so, because I do all those things and, after over a decade writing software, find the ability to solve puzzles almost completely useless for most coding I've ever done. But reality doesn't need to make sense. So, if you want to work for Google or Facebook, learn puzzles anyway :)

black pill: that's what they want