Why do we excuse someone's actions and not others?

I think that Kendrick collaborating with carti was irresponsible, that's just my opinion, I'm not gonna whine about it, I just want to hear others opinions. Why is it okay for carti to beat his pregnant girlfriend but Dizzy with a r got exposed for it. Is it because he personally attacked Kendrick or was it because Kendrick ACTUALLY cared about the victims.

It all seems to me like Kendrick only did it because he got offended by DIzzy with a r

(Y'all know who I'm talking Abt it won't let me say the man's name 😭🙏)