We're either not counting pasts before here or we are, cause they're using it against Elena but we're not allowed use it against them, Katherine, so many others, that Ward guy isn't allowed use it against Loki. Doesn't matter if events have or haven't happened. Its in the memory of those who lived it.
But what it depends on is who is liked more, people like you and the Mikaelsons more than Katherine, they've had forever to spread crap about Elena. Loki has proved himself sure, and hell I count him as a friend but that guy should never have gotten jumped on just for not being okay with a guy he sees as a monster. No one gave him a chance. But when Kol threatened Elena, that was cool, right? That was deserved.
Its a big pile of BS and just proves my point.
I am a fan of chances. Huge fan. I got one. I took it, I worked at it, I gained trust. It took time. A lot of time. But then I watch people refuse to give them and it disgusts me. I watch people refuse to change, refuse to understand that they're not kings of the castle anymore, and no, I don't just mean them but they do it oh so well.