Because though the wolf is crazy, he doesn’t kill those who are innocent. The wolf raped the MC and lets his emotions dictate basic decency.
He apologized almost immediately for what his heat made him do and has shown remorse over it. His emotions aren’t controlling him either, his love for MC controls him but it’s been shown he doesn’t care/is unaffected by emotions and doesn’t slow them to control him when it comes to people who aren’t the MC. Rape is wrong sure but he is forgive cuz it’s kinda not his fault for his going into heat - not exactly something he could control just like in Omegaverse which this manga is omegaverse-esqe.
He apologized but then attempted to court someone who didn’t want his affections, he dragged him Eros numerous times under the guise of jealousy. He is definitely overran by emotion which caused him to drag Eros in disrespectfully and punch him.
Can’t wait for MC to see what kind of monster Aioros is truly. I don’t get why people in the comments love shipping him with MC so much? I think the sexy wolf cop is the better ship tbh.