As I'm currently living in a hacker house in San Jose, I'm obligated to say that this is mostly true except that you make it sound shadier than I think it usually is.
Mine is a 5 bedroom that fits 15 people (one of the 5 bedrooms is for the guy who runs it + his gf). He himself is renting from a landlord who knows that it's a hacker house and is completely happy with that--the landlord gets paid rent while the host takes care of everything that goes wrong (when all utilities get 5x normal use, things break all the time). The host does all this and makes $27/day from each tenant. The whole setup is through Airbnb, and he's made sure he complies with Airbnb rules as well as San Jose rules for renting out houses.
I, too, first rented this place because it was cheap and available on 1 days notice, and while I had planned on moving out to find an apartment, I ended up staying for months because the community is good, the house is well maintained, and the rent really is affordable compared to the cost of most places on Craigslist (which would all be shared houses anyway).