The first point of contention is the notion that Christianity has positively accompanied leaders of the world and is an instrument of cultural unification.
Its very existence materialized as a means of segregation against the traditional Greco-Roman pagans and Judaism, and after being selected as a national tradition by Constantine in 380 C.E., it began discriminating against other religions. That led to the extinction of Jewish populations in certain regions and mere forced conversions for pagan faiths of the empire.
With a look toward the settlement of the New World, the Salem Witch trials or 21st century restrictions on gay marriage, we see that the recent past and the present day reflect its confrontational beginnings and a fundamental tendency toward aggression — a characteristic of all proselytizing religions. The statement that "Christianity is becoming taboo" is contradictory to statistics used to asses that status.
According to the US Census, 76 percent of Americans are Christian, and according to the Religious Tolerance Organization, 33 percent of the world is Christian. 100 percent of American senators are Christian, and according to the University of Pittsburgh, 41 percent of prison inmates are Christians.
The final point of argument comes from a misunderstanding of United States law and its relationship with people's activities. Public prayer is hardly condemned, as 58 percent of Americans do so daily, but according to the Bill of Rights, it cannot be, nor does it have any reason to be, part of public policy.
The addition of "Under God" to the Pledge of Allegiance in 1954 draws no "harsh consequences," its legality is debated because of its inclusion of no indefinite article, and therefore investment in a single faith, introducing the term "God."
The notion shared by Seidel and many other Americans that Christianity is responsible for "the fundamental beliefs that were once the foundation of society" is wrong, as society predates the 1st century C.E.