Homebrew is important so you can slowly build up a battery of tests and compare to real hardware. In fact that's arguably more important than any insider knowl

Homebrew is important so you can slowly build up a battery of tests and compare to real hardware. In fact that's arguably more important than any insider knowledge because insiders have a remarkably incorrect view of the systems they build compared to people who spend years looking at it as a hobby. Insiders are ultimately very driven by the deadlines and pressures of shipping commercial systems and their knowledge only has to be good enough against all the other competing concerns.