A guy I knew at a sportsmen's club owned a Walther. He had occasional jamming problems when he used hollow points. Occasional meaning perhaps 1% or 2% of the time. So maybe that's why the person in the article used FMJ rounds.
I'll note that the guy I knew was lazy in cleaning his firearms. That probably played a part as well.
I would never, ever, trust my life to a firearm with that kind of failure rate. I wouldn't carry any gun that I hadn't already fired at least 500 rounds through without a hiccup.