I'm basically restating what you said, but it's amazing to me that the vast majority of people you will meet, even educated people, are casual dualists and free-will libertarians. If they happen to acknowledge materialism in some way (i.e. the acceptance of the idea that the brain's processes are just the interaction of physical matter), there is still zero chance they draw determinist conclusions from that acknowledgement. But I guess that tracks, given that most professional philosophers are apparently compatibilists for some reason I have never understood (the arguments get really confusing).