Think it is a problem but every other resource in game development is summarized, organized and bookish.
Handmade Hero is unique in that it is: - Real time, watching a dude program a game - He speaks his though process, stumbles, gets up and resolves issues - Community interaction as they progress through the game
All, at the expense of content bloat. I think its popularity has spoken for itself in that Handmade Hero is a totally unique form of education.