Do you advocate doing this? Or are you just making the point that it's possible?

I know people who more or less do this. Do I advocate it as the solution for everyone or even for myself? No. On the other hand it's a valid choice for some people.

More importantly it's limiting to think of money as the only way to acquire stuff.

I personally can't work as effectively on a notebook as I can when I work at my own setup with a monitor, a separate keyboard and a mouse. I have no problem being 12 hours per day in front of my computer setup but if I spent 2 hours in front of a notebook my back gets tense.

If you're not doing any of the things that are traditionally held to be worthwhile (working, teaching, studying, creating art, etc.)... then you are legitimately unlikely to be an interesting person, someone whose company is valuable.

Looking for a way to get payed can constrain the work that you are doing. Einstein did most of his important work in 1905 in his free time and not at his formal job as a patent clerk.

Julian Assange would be someone who did very important work at Wikileaks which didn't pay and who never had a formal residence but just went from sleeping at one person place to sleeping at the place of the next.

As far as education goes Steve Jobs is a good example. After he dropped out of school he crashed at friends places to have shelter and he went to those lectures that interested him.

In my experience autodidacts are often more interesting people than people who are formally educated.

Are you serious with this [eating pigeons]?

Tim Ferriss wrote a guide on how to catch pigeons for eating. I think it's somewhere in the 4 hour Chef. I see no real reason against the practice. Being the kind of person who can cook a good self caught pigeon meal also helps with being an interesting person.