Any firearm can have a kB! Hey Mike the venerable 1911 also does not have a fully supported chamber. We have had this argument hundreds(thousands?) of times. The only time that this is an issue is when you have a high pressure or overloaded round. That can happen to any gun. I would suggest that one of the reasons you hear about it more in Glocks is because of the sheer numbers of them in 40S&W(definately the #1 culprit caliber). I could make an argument that any gun is unsafe. Here is a few examples.
H&K USP40(fully supported chamber) and reloaded ammunition.
Fully supported chamber really does not change diddly squat with a bad reload.
H&K USP45(fully supported chamber) and reloaded ammunition
H&K .45 go kaboom!
Colt Anaconda 44 Magnum revolver(fully supported chamber) and a double loaded round:
Ouch! Now that is gonna leave a mark.
Charter Arms .38(fully supported chamber) and bad reloads
and that is just a little old .38!
Unknown 1911(non fully supported chamber)once again bad ammunition.
Everybody knows that 1911's are the best gun in the world!....hmmm
And finally how about an M1A and bad ammunition.
Dang! and that is very much like a rifle this country uses to defend us.
My point is that any gun can have a kB! The Glock is not perfect by any means but many people go overboard as to it's faults. If you like them(like me) great. If not, that is great also. I hardly think you are saving your fellow man by spreading what is ultimately your own personal bias towards them. But what the heck, I am smart enough to form my own opinion so "carry" on(pun intended).