I think "godisnowhere" is more an example of a straight-up badly chosen name (identifiers should not be complete sentences) rather than a case where caps are better than lowercase.
I'm not against camelcase and its variants, but there are a wide variety of naming standards using caps, it's quite possible to get mixed up between them and introduce ambiguity or worse (referring to the wrong variable).
I believe the intention of this name was the parsing ambiguity of the word "nowhere" when you don't have word delimiters, not as an example of an actual name, or a statement about the location of God :)
The ambiguity isn't in the name on its own "God is nowhere". It is in the combination of that name, and a bad naming convention.
If you had a naming convention which prohibits vowels, then the identifier "shrt" is ambiguous because it could be "short" or "shirt". That doesn't mean that "short" is a bad name for an identifier.
I'm not against camelcase and its variants, but there are a wide variety of naming standards using caps, it's quite possible to get mixed up between them and introduce ambiguity or worse (referring to the wrong variable).