Back in my NRA trainer days, our group tried to discourage the use of Glocks on the range. We referred to them as 'Glops'. We had more trouble with Glocks than any other semi-auto pistol.
I've put over 2,000 rounds through my Glock and never had a misfire or any other problem. I can't say that about my Beretta or H&K.
That sounds like the kind of thinking when "plastic" guns like Glocks first came out.
The last 4 day training at one of the best training facilities in the US I went to the majority of class used Glocks. Zero malfunctions from the group using Glocks.
The students who did have problems were using 1911 and various other handguns.
In fact the training facility used Glocks as their rental guns because they almost never had problems with them.
Any individual guns can have problems but if you stay away from the cheap guns most modern autos are reliable.