Any work of architecture that has with it some discussion, some polemic, I think is good. It shows that people are interested, people are involved.
We are all affected by Le Corbusier, Frank Lloyd Wright, Alvar Aalto, and Mies van der Rohe. But no less than Bramante, Borromini, and Bernini. Architecture is a tradition, a long continuum. Whether we break with tradition or enhance it, we are still connected to that past. We evolve.
An important work of architecture will create polemics.
The responsibility of an architect is to create a sense of order, a sense of place, a sense of relationship.
As there hasn't been any new modern architecture built in the historic center of Rome since Mussolini's time I think the Ara Pacis Museum became a lightening rod for issues that were not directly related to the building itself.