Strapped with HKs,
I've owned 5 .40 cal Glocks. None have blown up. I have never seen a .40 cal Glock blow up, except on the Internet. I just don't see that as that likely an event based on real life experiences. I've no doubt it happens. I've no doubt that folks sometimes get hit by lightning or win the lottery, too, but I've never seen it happen to anyone I know.
For that matter, a Federal alphabet agency I know of has recently sent their agents at a local office to go buy Remington Golden Saber. Apparently, the Gold Dot ammo they were using blew up three of their .40 SIGs.
Anybody can make a bad lot of ammo. Any gun can explode.