Generally these computer systems do access control, patient charting, intake management and most other critical functions, just like the rest of the world.
Blood banks and controlled medicines are likely gated behind access controlled doors, and without either it could cause major impacts to the ability to save lives
I would assume if they were the ONLY hospital in Lubbock it would be different but it seems like there are plenty of other hospitals, albeit not level one trauma centers. I wonder if the area has "diversion" protocols already. The vast majority of patients transported by ambulances don't need level one trauma centers so its probably more nothingburger than the article is making it out to be