"Yeah, sure. I get you." Thumbs says, but he is looking at Marco and the Dogs the whole time. Not that it is some sort of sexist 'females cannot be dangerous' mindset - that shit gets you dead pretty fast - but that Thumbs knows where the real threat lies. As debatable as Thumbs' intellect and sense of self-preservation might be, he at least knew well enough not to cross Marco right in front of his face. And since Marco had Rose's back, it was easy to infer that whatever Rose wanted Marco was going to back her on. "You're a freebird." This was not a happy time, but that did not mean that Thumbs was being, in this moment, dishonest.