First of all, that's not total ICU utilization, which is the metric that should interests you.
Illinois, the state you cherry-picked, has only 508 ICU beds remaining out of 3127. That's one doubling away from disaster.
Here's an example of people dying because they couldn't find an ICU bed : https://meaww.com/ray-demonia-cardiac-failure-dies-icu-beds-...
Right now the US is at the cusp of disaster with 78% nationwide ICU utilization. As we've seen some states are at functionally 100% utilization and turning away patients.