Complicity is a loaded term, so I can see why you'd feel that way. Perhaps it'd be better to say that such behavior enables the slaughterers to do what they do. As for the ethical question of whether a particular instance of backing down was right or wrong, hopefully our analysis of power dynamics avoids answering such questions and focuses on, well, the dynamics of power. That's not to say that such questions are irrelevant, they're just a different field, like the quantitative differences between the light emitted by configurations of dyes and the feeling evoked by a certain painting.