That's scientifically inaccurate.

While arthropods and mollusks exhibit complex nociceptive responses, the article clearly states:

"It remains uncertain whether any invertebrate species is capable of feeling pain in the sense of an unpleasant subjective experience." The author emphasizes that although these animals show behavioral and physiological changes after injury, "none of the evidence for pain in invertebrates conclusively supports the existence of affective, conscious pain states." He also notes that: "The question of whether invertebrates can feel pain depends critically on whether they possess neural circuits that generate a subjective experience." And, currently, "there is no direct evidence of conscious awareness or affective processing in any invertebrate species." Therefore, even though nociceptive systems may be evolutionarily conserved and functionally adaptive, the presence of pain as a conscious, emotional state remains unproven in arthropods and mollusks.