I am constantly amazed at how many people immediately place responsibility for a blowout on age. What about underinflation/overoad, pinch shock that happened a few hundred miles ago but just now decided to let go, etc., etc.
In my many years I have done hundreds of "s**** tire analysis", and can honestly tell you a vast majority of the blowouts were due to maintenance problems, and not age. If I was to name the primary cause it would be cheap radial tires.
"40 years in the tire industry; seen it all and done most of it"