That link leads to a rabbit hole of legal paperwork. Makes me glad I never wanted to be a lawyer and really sorry for the judges who have to read it all. I wonder if they really do read it all. I read the final decision. 14 pages long and 5 of those pages were spent investigating the possible meanings of the words "willful and wanton negligence" They compared potential meanings from dozens of other cases and Texas laws where those words were used in various contexts. I've had undergraduate philosophy courses that involved less circular reflection. In the end I'm not sure the judge had decided what they meant but decided whatever they meant that standard hadn't been breached. Nice to see common sense prevail but a little scary how we get to common sense.
As for Dr Abo. The final decision still referred to him as "Abo is a highly credentialed toxinologist who specializes in snake envenomation;" That seems like a stretch. As near as I can tell there is still no clinical specialty of toxinology.
toxinology training There are a few organizations that it looks like anyone can join by professing their interest in envenomations.
IST NAST
So, you can be interested in toxinology but it doesn't seem like you can be credentialed, highly or otherwise, in it. If he really gives antivenom to every snake bite immediately as he said, he is committing malpractice and not following the manufacturers recommendations. First person to develop anaphylaxis after being treated by him should be suing the crap out of him. I wish there were more consequences for hired guns like this. There are better ways to make a living.