My beef is that an objective person paid to publish an article should not parrot another article without evaluating the basic assumptions.
Anyone who grew up in the states or the UK should know that they have a lower murder rate and obviously with fewer guns around have a lower "murder with a gun" rate. To imply otherwise is foolish. Also to claim US murders are falling and not state that UK murders are falling as well is deceptive.
If she wants to be taken seriously then she needs to do her homework. If she wants to be a parrot, she is on the right track, but then readers should know that her work is unreliable.
That said, I've never had a problem with her articles before so maybe this article was just different.