I think not long ago there was a police department suing SIG due to their pistols having failure to eject, oh wait, I do have a link:
http://www.thefirearmblog.com/blog/...edly-selling-defective-handguns-state-police/
Any striker fired pistol will Kaboom, metal guns just do differently due to the pressure not being able to escape through the frame. A Kaboom is a Kaboom, regardless of make or type, it happens to all pistols. It is not a GLOCK thing, at least not anymore
If you are going to use anecdotal stories, please also make sure to educate the new shooters: Older GLOCKS lacked a fully supported chamber, something that would create the GLOCK BULGE in brass, specially .40 due to the high pressure, This was the main cause of Kabooms.
New Glocks do not have this problem as all the chambers have been modified to provide more support.
For what is worth here is an anecdotal story (for the life of my daughter this is true), a buddy of mine has over 50K (I bet maybe 70K) in his GLOCK (about 5 years old pistol), I think he cleaned it only once this past year because I was making fun of him and because he had, for the first time ever, a couple of malfunctions (light strikes due to all the crud accumulated around the chamber, ejector, etc). he is a high volume IPSC shooter.