It strikes me that the only “disagreement” you have with the OP is that your reasoning isn’t completely spelled out.
If you said, for example, “I don’t believe pigs’ suffering matters as much because they don’t show long-term behavior modifications as a result of painful stimuli” that wouldn’t be a speciesist remark. (It might be factually wrong, though.)
It strikes me that the only “disagreement” you have with the OP is that your reasoning isn’t completely spelled out.
If you said, for example, “I don’t believe pigs’ suffering matters as much because they don’t show long-term behavior modifications as a result of painful stimuli” that wouldn’t be a speciesist remark. (It might be factually wrong, though.)