To give a counter example, is bris mila immoral in a society which considers it barbaric ch”v?
Very good. That is the point, that each idea has to be weighed based on the subjective weights placed on it by the viewer. Bris Milah in general would certainly get a higher weight than other “problematic” concerns, such as (for example) Mietiza B’Peh (which is certainly not Meakev) for the Pikuach Nefesh (or societal) problem.
Point being, it’s not black & white. That’s why you need a Rov.