What's extra wild about the arcs with Harry and Ben this season is that even though neither of them are forgiven, Harry legitimately had much more growth than Ben did. His behavior changes from part of the problem to part of the solution if only in one instance, and his apology is an actual apology, including what he did wrong and plans to change in the future. But Ben, just like last season, spends the season lashing out at others instead of dealing with his issues, this time with Imogen instead of Charlie, and just like last season, his apology isn't an apology but a vehicle for his own gain. Most of all, while Harry isn't overflowing with accountability, he does acknowledge that what he did was wrong and doesn't scapegoat anyone else, while after everything Ben still doesn't seem to see the severity of what he's done and is still blaming other people. Ben uses his victimhood as a shield, and it's a brilliant moment of growth for Charlie that he sees right through it.