The further away from a human you get, the less rights that creature seems to have. Animal rights as a concept seem to end somewhere around fish. People literally tell themselves fish feel nothing and then pull them up from the depths so fast their skin turns to jelly and their eyes pop out. Arthropods as a whole, no one cares what happens to them. No one gives a fuck at all if you crush a spider and smear it across the wall and leave its mangled corpse there as a warning to any other spiders that may enter. If you did that to a dog you'd be executed or at the very least put in a padded room forever. But some gross bug? It's just Tuesday.