Interesting point, but then imagine bringing a person from 100-200 years ago to the present day and show them automobiles, planes, rockets, utilities and home appliances. They would probably be amazed by such incredibly advanced technology and then be dumbfounded to learn about the thousands of people who did from accidents related to these scientific marvels.
If alien visitors and UFOs are here, it doesn’t mean they are gods, perfect or immortal. Rather it just means they are more technologically advanced but every bit as susceptible to making mistakes as we are.
did from accidents = die from accidents