We do agree. I was disagreeing with the posters who were trying to come up with some mathematical formulas using past statistics, which may or may not have been relevant.
Look at it this way: Before you shop for a car you try to get some data to avoid buying a make/model that has a reputation for being unreliable. After you buy the car, you don't care about the make/model data any more and worry whether the individual car you just bought is reliable.
Calculating aviation risk is sort of similar.