Technically, not true.
I have read at least one account of a person reholstering his Glock and a shirt getting caught in the trigger, making the gun discharge. Could never happen with my Kimber as it has a thumb safety AND a grip safety.
What is more likely is; he inserted his gun If you believe that story,
there are folks who have a bridge to sell you.
into his holster with his finger on the trigger
The story I recall was hat of an officer in a bathroom stall getting everything together. Why is it implausible that of the millions of times officers who carry Glocks are in the bathroom that this scenrio would not play out at least once?????