I think it's perverse to argue that well established scientific facts are opinion. The Earth is roughly spherical in shape, water is made of hydrogen and oxygen

I think it's perverse to argue that well established scientific facts are opinion. The Earth is roughly spherical in shape, water is made of hydrogen and oxygen atoms, and evolution happened. Those are objective facts that don't depend on anyone's agenda. Unless you want to argue some unprovable metaphysics that makes the empirical world a misleading appearance.