Well, there are varying degrees of 'not owning shit' - I don't own a great deal of stuff, but I own more than I have done in the past, and more than this guy who says he can fit all his possessions in a suitcase. I don't think I'd qualify by his standards - and maybe not by yours.
For example, I have enough clean clothes to go two weeks without doing laundry; four pairs of shoes (trainers, formal shoes, safety boots, dancing shoes); six sets of plates and glasses (more than I've ever needed to use at once); cooking stuff like pots, pans, spoons, whisk, scales etc; a motorcycle; a set of motorcycle maintenance tools; three different coats (regular coat, motorcycle jacket for me, motorcycle jacket for passenger); kit for several different sports; desktop computer, personal laptop and work laptop; soldering iron; digital storage oscilloscope. All stuff I need to get stuff done, but certainly more than I could fit in a suitcase.
For example, I have enough clean clothes to go two weeks without doing laundry; four pairs of shoes (trainers, formal shoes, safety boots, dancing shoes); six sets of plates and glasses (more than I've ever needed to use at once); cooking stuff like pots, pans, spoons, whisk, scales etc; a motorcycle; a set of motorcycle maintenance tools; three different coats (regular coat, motorcycle jacket for me, motorcycle jacket for passenger); kit for several different sports; desktop computer, personal laptop and work laptop; soldering iron; digital storage oscilloscope. All stuff I need to get stuff done, but certainly more than I could fit in a suitcase.