Gary I agree with you.
DMV puts in writing what they want to see inside an RV, leaves it somewhat vague to be flexible and then leaves it up to the individual to build it as they see fit for the space.
It's actually a nice win-win situation when you think about the flexiblity they give you. If you come up to 80-90% of the complete system they are likely to pass you just to get you out the door and on your way.
Here is what CA DMV says again:
"Human habitation is living space which includes, but is not limited to: closets, cabinets, kitchen units or fixtures, and bath or toilet rooms"
from the CA DMV form:
"Miscellaneous Certifications, Certification of vehicle for human habitation"