Los Angeles county, where the doctor who wrote the piece is based, currently is at 70% capacity for ICU. Which is not as bad as the last peak, when it was 93%, but is not great, and it's trending upward.
Which is typical. What you're referring to is part of the hype campaign of the last year. Hospitals' ICU are _normally_ at about 70% occupancy. The data below is from 2010, in fact.
"The national average I.C.U. occupancy in 2010 was 67 percent, according to the Society of Critical Care Medicine, though the occupancy baseline changes depending on the place, time of year and size of hospital. "
https://covidactnow.org/us/california-ca/county/los_angeles_...