My flats have almost nothing to do with the conditions of the roads. They are all related to what is on the roads or on the places where I ride bikes. We have
goat heads throughout the area where I ride most and, if you don’t have them, thank your lucky stars. I occasionally get flats from glass and I occasionally get flats from wires off of steel belted tires. Cactus spines also take their toll.
My main point, however, is that flats aren’t something that is planned nor something that is uncommon.
I can see some problems I can see with your tale about the blowout. Blowouts aren’t caused by a tube rupturing inside the tire. That never happens. If the tube were old enough that it were to crack in the tire and release air, it wouldn’t blow the tire off the rim. I’ve seen tubes rupture because of a bad rim strip and those are relatively quite “pops”, not loud bangs.
A very loud blowout is related to either the tube being trapped between the rim and the tire where it forces the tire off the rim and ruptures. That’s a very common mistake and is always user error. I’ve done it but I’ve never blamed the tire.
Your statement that you ripped the bead off the tire says to me that it could also be a defective tire. I have had blowouts on (supposedly) high quality tires that were the result of the tire just not staying on the rim. But the tire never experienced damage. I’ve also experienced cases where the fabric was inproperly cured or was improperly wrapped around the bead and slipped off. That
did result in tire damage. But, in both cases, the tube was not responsible for the blowout nor has a trapped tube ever resulted in tire damage.
Tubes don’t degrade in tires. The tire makes a really good barrier to most everything that would damage the rubber of a tube. I’ve pulled perfectly good tubes out of severely decayed tires from 1980s bikes. The tube, in some cases, was probably OEM. The tire was mostly just cord but the tube was fine.