You're right. I've watched many hours from the very beginning and this is about learning from the basics. It starts even before episode 1 with intro to C stuff. And he constantly reinforces the fact that this is for teaching "from scratch" and therefore isn't using libraries, but if you were to build a real game for sale there are places where you wouldn't be doing things the same way. Overall a very educational project.

Yeah I don't think that's a fair categorization at all. It's all free. And his dedication and commitment is to be commended. This is a free, multi-year, live training program that has been ongoing since 2014.

Yup, most game developers love sharing/talking about the craft. It's not an industry you join if you aren't passionate about the process of developing interactive content.