The life of a typical vehicle is 15 years, so saying modern air bags are designed to last the life of a vehicle rather than 15 years doesn't make a falsifiable claim.
The Takata recalls indicate that what specific claims are made about airbag performance are not always accurate, and environmental circumstances and time factor into that.
The Takata recalls indicate that what specific claims are made about airbag performance are not always accurate, and environmental circumstances and time factor into that.