I started a new discussion about that here Researching Toyota throttle by wire unwanted acceleration or stuck throttle cases . It doesn’t seem that software can be ruled out as one of the causes.
You might be surprised at the number of people or are idiots then.
Which isn’t enough with a 175 pound person and speeds over about 30 MPH. A 35 MPH test with no airbag caused the driver’s head and chest to slam in to the steering wheel at 21 MPH after the load limiter allowed extra seat belt to spool out.
If a slow driver cuts in front of you and you hit them at 55 MPH and your airbag deploys, now you could still being going 40 MPH and lose control and hit a stationary object at 40 MPH with no airbag and a seat belt that can’t protect you over 30 MPH. Such accidents have happened and were fatal.