Its clear that "good" or "bad" in this context means if it helps in any way any other species (including us) or environment, and given that it stings a lot of animals causing them some pain it already has some points on "bad".
Isn't pushing back on animals, in particular apex predator types, "good" in some natural sense. Making areas uninhabitable (except I assume for species that have evolved, or will evolve, some kind of symbiosis) seems like an important role. Any lifeform that gets an open field will just grow until they run out of food or invite disease or whatever. Unfavorable parasites or whatever you want to call them are an important part of the balance, even if they are clearly bad from the perspective of whoever they're feeding on.
Humans have quite a few bad points here as well.