Sometimes evil is a life choice, it doesn't need rhyme or reason. Gus is someone who believes his views, he might know its considered evil, he just doesn't give two squats. Thats the bemoaning of weaker lesser creatures. Say it too his face, he dares you.
Now me I'm more of a Roger Delgado evil, (IE The first actor to play the Master on Doctor Who) A villian with class and style who you can't help but LIKE and forgive as he carves your heart out.
Ironicly when I got to roleplay a tabletop game as a bad guy? Psh I just played plain sadistic crazy evil, those are the best kind. No worry over moral decisions. This is how they like it. For Gus go figure his religion supports this.
Now Butch is diffrent, an antagonist we now see more clearly why she thought as she did. Damaged goods with a long road of recovery. She saw Peter as a probably means of escape. Heck for all we know in her own way she might actualy care for him. HAH Now we'll get shippers on that crap.
In the end we've several views, Gus is out and out a baddy (for now at least) and we might yes see him removed one day. Being how he is they might just drive his ass out. Means he might show up later for revenge. Heck we might dare we say it, see an arc that has us follow a search for gus's former mate and see things from her view. Peter and Sarah are the audience ways of seeing the world, but a cast you can see is gathering, adults, kids, and the new class mates shows even more.
Heck whos to say we won't get fun stuff from them.
In the mean time, silly Peter. Hit that like it was going outta style! Sheesh how often does he get to play alpha!?