This happens often. Before someone quotes or highlights or refers to another person’s remarks, they preface it with, “I don’t agree with everything but …” then proceed to say something that they liked. I hear it in conversation with others, I see it on social media, and I read it in books. In fact, the sentiment has been systematized into a legal disclaimer: “the words and opinions expressed here are their own, and do not represent an endorsement.”
When I was editing a chapter of my book, I noticed I had employed the same tactic.