Propaganda from the anti's . They have nothing lately to talk about , no horrible black rifle incidents .
If we were talking about rifles I have heard of that had work done to them or the owner altered , then I would say yes , I have heard or Rem . 700's malfunctioning that were altered or not taken care of .
A couple of hunting seasons ago I had my 870 Mag. pump gun go off with the safety on , not same firearm or action , but the trigger system had been sent out & altered ,as in a trigger job. The tip of the Hammer sear had sheared off , the heat treatment on these modern rifles is thin , just like any AR std. trigger set, you have very little to play with , if any .
That's why I like the after market trigger systems so much.