I'm not sure the point of this twitter post. But DeSantis is basically correct here, the vaccine gave you a better chance of surviving a serious case. And yes, the ICU's and morgue's were seeing mostly people without even a single jabs.
What this twitter post helps illustrate is how you can have a PhD from MIT and still not be able to tell the difference between "95% of people in the ICU didn't get the jab" and "95% of all people who didn't get the jab will wind up in the ICU".
I plan to vote for DeSantis, and with a degree of enthusiasm I haven't felt a while.