It is not squeamishness. I have killed animals for food with my own hands and being part of people killed in war. I would like to not do it when I have the opportunity.
I have killed animals for food with my own hands and don't mind the process. Worst, I prefer a 1000x killing my own food rather than buying highly pre-processed industrial food of dubious quality (and manufacturing process).
The parent comment explicitly and clearly attempts to use an emotionally designed device leveraging people's presumed distaste for distressing animals. An errant assumption.