I think the article takes a very balanced stance. It is pointed out multiple times the that people are glad the hospitals are mostly unused, that they now exist if there is a surge, and that the excess bed capacity is very helpful during a crisis like this. The real criticism is nothing like you've paraphrased.
> They praised the Army Corps for quickly providing thousands of extra beds, but experts said there wasn't enough planning to make sure these field hospitals could be put to use once they were finished.
>The Army Corps limited the competition in awarding the projects to speed the process, which usually takes six to nine months, according to agency documents. Officials noted they were able to complete the contract award for the Stony Brook project in a "little more than three days."
>The two Long Island field hospitals were completed in late April. They never opened to the public and didn't treat any patients.
>The plan was for the Javits Center to take patients from overwhelmed hospitals in the city. But in practice it wasn't that easy. Some hospitals complained that the intake process was too complicated. And they sent few patients to Javits — even as they resorted to treating patients in the hallways.
Seemingly like all of the US coronavirus reactions we dragged our feet at multiple points, had no reliable central coordination, and large sums of money was made against the backdrop of human suffering.