But he does get better. He tries to do the right thing. And when push comes to shove, he will always protect his family. Let's not forget that when Veronica's stepfather grabbed Georgy and tried to forcefully take Veronica, George knocked him out cold. And there was a tornado going through Medford, he used his own body to shield Missy.
Even though Chloe is presented as an entitled rich brat with high self-esteem, she is incredibly insecure. Her abusive childhood would logically cause her to feel she isn't good enough. And you see this in her interactions with her mother. Getting abandoned by her own mother is traumatic. And this would've been triggered by Ladybug ignoring her.
She's realised how much she relies on Cat Noir. And she's realised he's the only one who's been through it all with her. I want that to really sink in. I want him to be as involved now as he was at the beginning of the series.
All magic has a cost and if you refuse to pay it, someone else will. And after seasons of Emma doing the right thing (for the most part), resisting evil (for the most part), she is rewarded for her consistency with a gift few ever receive.
Margot and Lara Jean spent her entire childhood trying to make it up to her. So of course they weren't going to reprimand her. Of course they weren't ever truly going to be mad at her for long.