This is fascinating. Discuss.
If you saw how it was transported and handled by retail employees, you'd be surprised it even made it to the store to buy. They also can't possibly account for other things that can happen to those dishes in people's homes. Maybe it was dropped, but didn't break. Maybe they ran cold water into it when it was hot, but it didn't break. Then, while cooking in it, it somehow reached its breaking point. Sometimes products are just defective, sometimes it's operator error.
Yeah, I think the underlying point was that the thermal coefficient (the inverse of how much expansion or contraction a material can withstand and maintain its integrity) of the newer glass is much higher, so the normal abuse you described, produces more catastrophic results. IOW a less safe product was developed, but literally tons of safer product are available at thrift stores