In addition to the self promotion benefits, writing about something in plain terms is the best way I know of to shine a light on areas I don’t fully understand. It’s a useful tool to have if you’re serious about self-improvement.
Right, saying he couldn’t get anyone to listen to him is super reductionist. No one cared about hobbyist VR until Carmack started working with Luckey and got the software to run a lot faster. It was him taking it seriously that helped get the ball rolling for the VR boom.
Correct. There are also plenty of people who realize that while things are possible within a system, they choose not to do them for moral / ethical reasons.