The Const'n restrains government, not private citizens or groups. The First Amendment stays out of religion. When our federal const'n was enacted and the First Amendment ratified, several states long had state established religions. Massachusetts was one. The regional religion dominated the smaller ones. This was the English one. England did not exert much jurisdiction over the colonies so state general assemblies flourished and estalished religion. The question when the First Amendment was drafted was the extent of federal power. It was assumed states had the right to do what they wanted. State establishments gradually faded away.
The Civil War turned everything topsy turvy. The Thirteen and Fourteenth Amendments were ratified in quick succession. It was said that the Fourteenth Amendment incorporated the Bill of Rights to the states for the first time. Most justices now accept that the First amendment bars federal and state government action. Justice Thomas believes only certain amendments were incorporated. He is a very small minority. Scalia believes in incorporation.
As I stated in another thread, several European western democracies protect citizens from religion as well as protecting religion from government.
The United States has not done so. The Republican primaries should be proof that we are no so enlightened. I would rather the Witnesses have extra power than the government defining what is a dangerous religion. England decided that only the Church of England would receive tax dollars and be part of government.
What can be achieved is public relations. Information is far easier to obtain. There is no reason critical thinking skills cannot be taught from kindergarten. You don't need a college degree to have them. It is just when we usually first come across a decent education.
The Supreme Court has accomodated religion more and more recently. There are bigger fish to fry than tax exemption. I wonder what the cost to government would be if religious institutions that provide social welfare suddenly disappeared. More and more people believe the religious tax exemption is unfair.
Of course, if there is a specific instance of WT abuse, the IRS should know.