He gets where she's going, he does, but at the same time, he's been stuck on that same thought for a while, and he's worked his way through it. He resented Wanda for a while, he went so far as to outright threaten her in a display of calm and quiet anger that he didn't remember showing in a very long time.

It took him nowhere, though. And he knows it was wrong of her, dangerous, stupid, but it wasn't evil. She didn't do it with the express purpose of hurting anyone. Well, aside from the Avengers, whom she saw as an enemy at the time.

"I know. And I've been in that place for a while, festering in my own feelings, but nothing came of it. It was just better to let go."

And recognize, in the end, that she was fighting for the same thing as they were.