I mean, I dunno what to tell you but when they start opening up emergency ICU capacity being down 30% of nurses (accepting your premise for the sake of argument) doesn't help but it's not the core problem. The problem is people getting sick with severe illness due to covid, and that is largely unvaccinated people.
Severe outcomes stretch the system more, and unvaccinated people have more severe outcomes.
At any rate, if those nurses weren't vaccinated it's likely more than 30% would be out and a significant portion of them would be dead, so if you want to go down the "vaccines make people sick/more likely to be sick" path then you've just fallen off the rails. The path you have in mind would be a mass death event our medical systems are completely unequipped to handle.
Severe outcomes stretch the system more, and unvaccinated people have more severe outcomes.
At any rate, if those nurses weren't vaccinated it's likely more than 30% would be out and a significant portion of them would be dead, so if you want to go down the "vaccines make people sick/more likely to be sick" path then you've just fallen off the rails. The path you have in mind would be a mass death event our medical systems are completely unequipped to handle.