It seems a bit unfair to throw CLANG into the mix with these games:
CLANG was started by the author Neil Stephenson, and people are surprised how, by golly, the guy doesn't know the intricacies of game development (and its costs)?
I found it incredibly strange to see how succesful that Kickstarter was, since it's the same as a reknown gamedesigner asking money to write a book...
The other examples are people who have been veterans in the gamedesign industry, and whereas not automatically flawless, they will at least also know about the possible pitfalls of development.