I don't see how it is at all related to privilege; in almost every case he cited, it's cheaper to go minimalist. Let's look at his (perfectly reasonable) list of examples:
- Rent a furnished apartment.
This one you do need more $$ for. I don't have a furnished apartment, but I've spent less than $100 on my furniture (including getting some off the side of the road). I will feel no qualms about leaving it on the side of the road when I move.
- Use car sharing services
This depends. If it's more economical to use a car service, do it this way. For me it's not, so I own a car (but not a nice one, which keeps insurance and body-work costs low).
- Buy ebooks instead of physical books
Here there's no privilege either, since in my experience e-books cost about the same as regular books. (Maybe slightly less, but that will only offset the cost of the reader.)
- Use Netflix/Hulu instead of owning a tv
Again, no privilege. A reasonable cable subscription in the US is going to be $30, a hulu plus subscription is $10. Plus, you can sell your TV.
- Use pdf digital signing software instead of owning a printer/scanner/fax
This doesn't work all the time, because you still do have to print stuff every once in a while (trust me, I've not owned a printer for the last 7 years). However, usually you can just print stuff at work, or in a pinch, at kinko's. I've probably spent less than $5 over the last seven years at professional printing places, and their printers are much nicer than the crappy ink jet you get at best buy.