He went on it. It's at the end of the vlog he posted yesterday. He was there for the Media Preview. He rode with Sam, Jackie's maybe already husband.
Tigris at Busch Gardens Tampa also has a warning in the queue about it (which was the first I ever saw).
I think parks are starting to add that to cover their behinds in case of medial emergency/death related to riding. Same reason they put the high blood pressure warning. In reality, if those conditions are well maintained, it shouldn't be an issue (I'm borderline HBP and Type 2 diabetic, and my dr's say it's fine that I ride coasters/thrill rides as long as I keep them under control). They just need to warn people in general.