Ahhh… but are you really, though?! These days a statement like that is usually just a thin veil over a hardened dogma that lies just underneath. It’s exactly what merchants of doubt always say … “Yeah - but is it really proven that cigarettes are tied to lung cancer?” And they real agenda they pursue is the opposite of any real curiosity. Real curiosity doesn’t run away from real data when it’s available.
As Chesterton has said, “the mind, like the mouth, is meant to be open, so that it can close on something nutritious.” So real curiosity embraces and rejoices in existing evidence and understanding, while also holding it tentatively (but with confidence proportionate to the evidence), always open to new data or better theory that will likely clarify and refine - or even in rare cases, maybe even completely overturn. That’s curiosity.