Will the secularists be just as willing to remove their impositions from the people of faith? Publicly-funded abortions? Public education weaponized in some places to attack faith, particularly that of young children? Increasing political and financial pressure placed on those people and institutions that do not openly embrace homosexuality as "normal"?
The issue here is that the secularists believe that the Establishment Clause of the First Amendment makes non-religious thought and action somehow more Constitutionally preferred. It doesn't.