Tesla FSD has several situations where the car regularly performs maneuvers that, if the driver didn't intervene, it would likely kill the driver and other people on the road. It also has many types of routes where it can operate without any disengagements for a long period of time. I think that is a very dangerous combination.
If they really wanted to reduce deaths due to driving, they could use this FSD software to add better collision avoidance technology. Once you have that, introducing self-driving should be safer, even if it doesn't always make the right decisions it will be caught by the collision avoidance tech.