1) I sold my car when I moved here, and I usually walk or take Uber.
2) I sold many of my clothes when I got here (because my closet is small) and now use Rent the Runway Unlimited to have a revolving supply of designer clothes.
3) I do not have a washer or dryer so I use an app called Cleanly to pick up my clothes, wash, and return them.
4) I do not have a dishwasher or a microwave, so I never bought many dishes/utensils, and I order most meals I eat at home from seamless or PostMates.
5) I don't have a vaccum, a broom, a mop, a dustpan, cleaning supplies, etc so I use an app called Handy that sends a cleaner that has these things to my apartment every two weeks.
So, technically I own less things. But only because I can afford to pay to rent them (uber, rent the runway) or pay someone else to make up for not owning them (postmates/cleanly/handy). I imagine that the same is true for many of the people who live the lifestyle the author is describing. So in a way, I can see her point: we're not really minimalist, we're just rich enough to not have to own stuff.
But on the other hand, isn't it cool that technology has created a world where I don't have to own all this stuff to have a convenient, clean, fashionable life? I am not even a minimalist but I do think that the aesthetic idea of minimalism has influenced some of the technological advances that have led to some of the most innovative "shared economy" and peer to peer service companies. And if the people who came up with the ideas for these apps want to live in a white apartment with succulents, who cares?