[_aavaa_]

I have not watched Handmade Hero, so I can't offer any comments any their comments based on factual claims about the software. A few things though:

I am not linking to handmade hero, I'm linking to a separate project of his (his performance aware programming course) that is actually aimed at being an educational piece.

I lied, I will comment on one factual piece. "normal library code in favour of hand-rolling your own half-baked implementations based on outdated trivia." Yes, that is the whole point of the series (not the characterization as half-based and outdated trivia). The point was to show how to build a game (and its engine) from scratch to as big of a degree as possible. The avowing of library code is the point, to show what it takes to build engines rather than call a library so that the industry has more people who would even attempt doing such a thing.

Equally anecdotally, based on available online information, he worked for a long time on core technologies at RAD Game tools, a company which essentially every gamer, expect maybe pure mobile gamers, has purchased a game that used their technology. It may be possible that he acts (or acted in HMH) based on outdated trivia and favoured premature unfounded optimization, but I find it hard to believe based on the content of his I've engaged with and his track record.