This isn't true. Such a determination can only be made on a living brain. And the doctor that did the autopsy stated as much. What he did say was that there was damage. I still get steamed by writers that misstate what was said.
Polls show that most people believe that her dehydration was just and proper
Because they weren't told the truth.
I no longer have the link to Terri’s autopsy report. However, I think the author (Wesley J. Smith) was referring to the report that Mikey Schiavo had written, Wesley Smith is very close to the Schindlers and was definitely on Terri’s side.