Moreover, the point of the shutdown was to keep the virus from spreading, and yet the number of cases is still rising in most places in spite of it. As states a

Moreover, the point of the shutdown was to keep the virus from spreading, and yet the number of cases is still rising in most places in spite of it. As states are talking about reopening, it's just going to rise faster. The article notes that the field hospitals aren't being taken down, in case we need them. Since the spread seems likely to accelerate soon, it seems to early to say "we didn't use these field hospitals."