Do you really think the average person being/needing information about condoms can understand that?

I suppose, like, five or ten years might make sense. But it seems to me that the length of people's sex lives and time of usage of different birth control methods vary enough that even that could be overkill. Like, if you try out a method for a few months to a year, the 5-year prognosis won't necessarily be relevant to you. Although I suppose you wouldn't necessarily plan to use a method for less than 5 years, in which case, that's what would be relevant to your decision making, even if you don't end up using it for that long.