The one at Epcot is computer-based not CM so I wonder if maybe this is where the confusion began.
The one at Epcot is not computer-based, there is no computer technology available that can respond thoughtfully to things it hears and/or hears. Plus I just read the description for the attraction which includes the fact that a CM controls what Crush says. Yes it is computer-animated but the words are not the product of a computer.