I just find it wonderfully weird that no process has been found to just handle powdery flammable things better, instead of adding stuff to it to make it less risky to handle it wrong.

There's lots of ways to make handling such things safe: climate control, inert atmospheres, (in cases like this were degradation is involved) rotating out material, compartmentalization, automatic fire supression etc. The problem is that these are very expensive compared to the dirt cheap methods used in commercial fisheries

In this case, handling it wrong simply means letting it sit there in a pile.