But the movie never plays into that point. It is mentionned offhand for Judy to solve the case.
It plays into the racial 'black men can easily go wild' again, and the exaggerated treatment of drug cases in black men. 'They pretend to be nice, but drugs turn them back into superpredators'. It literally confirms the crackdown on cocaine use specifically in black communities going on in the 90s, and shows that that treatment was right... That is the takeaway from how they set-up the story.
It totally comes into play. Like, the whole point is that it would affect herbivores exactly the same way but it's on purpose only used on carnivores by the movie's villain because she wants to turn public sentiment against carnivores. That it's something that will turn anyone, herbivore or carnivore feral, but was specifically used to make it seem like a feral-only problem.
Like, that's directly connected to the plot. And the fact that Judy's able to figure out what's happening by how, at that point in the film, something seemingly unrelated affects not carnivores but herbvores (why care about her dad's story, what's that have to do with the carnivores at all, unless indeed it's exactly the same thing).
Like, the entire villain's plot was to drug up the carnivores to get the herbivores to think there's something different about them when there isn't. C'mon.
That you're just playing into that, completely ignoring the villain and her plot and going "no, no, there is something different about the carnivores" is bizarre to me.