Yes, a lot of people live in vans or on the streets. The issue is saying that's the new middle class. That's the part that's not at all true. Most people living in a sketchy RV by the stadium are not 9-5 office workers who are priced out of the city.
Good point, I guess the article says basically because they were clean, acted nicely, paid their bill and got groceries via lyft/uber and got out into an rv, they were middle class. Middle class should not conflate with reasonable human being who functions in society should it? That is incredible classist, anti blue color and anti poor people. You could be living on welfare and behave that way of course.
Now that you raised my awareness, I think the article conflates 'middle class' with normal behavior in a developed country, and that feels offensive to me, because it seems to suggest that some poor people are not like that.