GE from the article above; but the plane involved in Quantas incident was powered by Rolls Royce. Two similar incidents on same air frame different engines, just guessing maybe not the engines are faulty could be wing design, engine mount vibration control.
No, with the Qantas 32 accident it was definitively concluded to be a powerplant defect. Specifically an oil stub pipe which was bored out of alignment, causing it to fail, which lead to oil starvation of the intermediate turbine bearing, as well as an oil fire. Result was said turbine wheel coming apart, which wrecked a lot of other stuff as the shrapnel cut through the wing. But Rolls Royce fixed that, and as you say this is not a RR engine.
Just pure speculation, but this does seem more like the DC-10 incident many years ago that others have mentioned, where a material defect in the fan disc went undetected, eventually leading to it coming apart.