Let me help count the ways:
1. You use mixed range brass with unknown reload history. Stretched case base that's thinned, fixed and polished look like any other case. And no. No amount of push-through resizing with FCD/G-Rx die somehow will make the thinned wall thicker again.
2. Let's say you happen to be using mixed ranged brass that's been reloaded multiple times with "hot" powder charges and fixed with FCD/G-Rx die then the shooter "left" the weakened brass for some unsuspecting brass hound to pick it up. Let's also say the digital scale used was off by .2-.3 gr and Titegroup happen to be used with what was thought to be .1 gr "headroom".
When the primer ignites the "now max+" powder charge that lined up an apparent weakened spot of the case base with the chamber portion that's less supported and a case failure/rupture occurs, it is definitely not Glock's fault but the blame lies with the reloader. If a fully supported aftermarket barrel with tighter chamber was used, case failure/rupture may/might have been prevented.
3. Let's say a double-charge occured due to improper reloading practice or distraction. In this case, not even moderate/slow burn rate powder would have prevented a KaBoom nor a fully supported thight chambered aftermarket barrel. It's just law of physics at play.
After shooting several hundred thousand 40S&W reloads through Glocks, I don't mind being called a chicken. I happen to like my hands just the way God made them and not missing chunks from them.
For me and mixed range brass with unknown reload history, it's mid-to-high range load data and W231/HP-38 or slower burn rate powders. I could take chances with max charges but I am afraid of that particular weakened case that might ruin my day, and that would make me very irritated.
If you want to continue my "lucky" streak, toss bulged cases that won't fully resize even on a second attempt rotated 90 degrees, use mid-to-high range load data with slower than W231/HP-38 burn rate powders and use fully supported barrels with lead loads that won't gunk up fast like Glock barrels (due to longer leade and smooth start of rifling).
It's OK to be a smart safe chicken.