No, on basically all accounts. In the US there is a fatality every 75,000,000 miles, a injury every 1,250,000 miles, and a reported accident every 550,000 miles on average [1]. From a "reliability" perspective, we can reasonably assume that at any given time, you will probably crash in less than a minute without control over your car. The average driver probably averages ~40 MPH per unit time. So, on a minute basis that is one fatality per 111,000,000 minutes (99.999999%, 8 9s) a injury every 1,875,000 minutes (99.99995%, 6 9s), a accident every 315,000 minutes (99.9996%, 5 9s).
Even the worst component of the driving system (the driver) is solidly over 99.999%. And every single hardware component is vastly better than the driver. The Pinto, a classic example of a death trap, only resulted in a hardware-induced fatality something like every 1,000,000,000 miles, or using the minute basis above a fatality every 1,500,000,000 minutes (99.9999999%, 9 9s). The person you responded to is correct, 99.999% is unusably, criminally bad.
[1] https://cdan.nhtsa.gov/tsftables/National%20Statistics.pdf