This article (which I skimmed) seems to use Princeton as a counterpoint to Harvard's supposed cheating culture and lax attitude towards academics. I have no idea whether students actually treat academics with more respect than their Crimson counterparts "on average".
However, I can definitely say that the kind of collaboration/copying/cheating that is described for Harvard's Econ10 course happens throughout Princeton. Whomever is being quoted from Princeton, casting it as this supposed utopia of higher learning, is either bubbling PR nonsense or is just completely out of touch with what goes on in the field.