I think removing the tax-exempt status is way overdue. If the “churches” want to play politics with the big boys, make them pay. They all are political organizations now.
In my area they’ve sold off their hospitals and closed many of their schools; they seem to be basically political lobbyists.
It wasn’t a problem with Martin Luther King’s effort. The power to tax is the power to destroy & people don’t lose their rights because of religious beliefs. Do you want the IRS determining which religions survive and which don’t.