There are several problems, but a big one is just the way the news works. ICUs are designed to run at near capacity and are overwhelmed all the time if, for example, there's a big car accident. Right now, all eyes are on the pandemic and I'm sure it's true that there's places in the country where ICUs are full up with pandemic patients. But the way the news cycle works, "ICUs at capacity with COVID patients" gets a lot more clicks than "ICUs in this hospital are always at capacity, but now they are at capacity with COVID."
Also, there's been a couple of big hoaxes that have circulated like the one about how ERs were full of Ivermectin ODs and they were turning away car accident victims.
Here's the actual real-time-ish data of ICUs for the country:
https://www.nytimes.com/interactive/2020/us/covid-hospitals-...
Right now the national average for ICUs is 68% occupancy. Also from that article:
>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.