The HuggingFace attack was not "random" behavior. It was goal-directed but misaligned behavior.
This isn't necessarily a simple matter of the operator making sure they behave. AI alignment has been considered to be a difficult problem for over a decade -- and remains unsolved in general, as these recent incidents illustrate.
"Fuzzer" already has an existing meaning in CS anyway: https://en.wikipedia.org/wiki/Fuzzing