Most people aren’t writing game engines. Hell most people at BigTech aren’t worried about scalability. They are building on top of scalable internal frameworks - not code frameworks things like Google Borg.

The reason your login is slow is not because someone didn’t use the right algorithm.

Most game developers are just using other company’s engines.

While yes you need to learn how the architecture, the code isn’t the gating factor.

One example is the Amazon Prime Video team using AWS Step functions when they shouldn’t have and it led to inefficiencies. This was a public article that I can’t find right now.

(And before someone from Amazon Retail chimes in and says much of Amazon Retail doesn’t run on AWS and uses the legacy CDO infrastructure - yes I know. I am a former AWS employee).