I don't disagree with the sentiment, but that's why I said it's silly in context. He is the one who brought this idea/job up, she is replying to him about it, and then he goes "you can't always reason with people, you know?". To put this another way, if she had replied: "I'll make sure to strike first!" wouldn't he have said: "Whoa, slow down buddy!"?
We can say he read her attitude, but I feel like his comment is a bit out there nevertheless. "That's a philosophy for the strong." is a pretty strong statement, ironically. He didn't just tell her to be careful, he flat out told her that simply wanting to talk is dangerous, which seems a tad extreme. I don't know, maybe he is traumatized. XD