You can be anti-consumerism and be on the internet (I would call myself one, that except food, I haven't really bought anything for myself in this last year but still online ;)), but you are right, you will find them in different media than twitters/igs/facebooks. I focused on IG (but I guess twitter/facebook are the same) 99% of popular content you see is fake, produced to attract a certain audience. van-living, or surfing around the globe is as said before, mostly paid for by external sources that they don't disclose. I used to do a lot of surfing and met a lot of surf bums. They aren't usually in social media except maybe to share things about surf etc, and in most posts, are about the waves/new surf board, etc and you rarely see their faces. When you see 'whatever audience target' person in IG and it is a pretty face (usually loads of make up or youc an see the hair took 3 hours to prepare), these people have teams/donors behind them to sell you something.