It's usually the atheistic governments you have to worry about. Religion is competition for the state. The state is based on theft so, that always creates a tension between itself and established religion.
Discussion
Incorrect. It is the governments that pick your religion or religious status for you that cause the problem. Plenty of historical records of governments with state religions purging believers of other religions. This includes multiple religions and multiple sects of christianity with blood on their hands.
By having a faith office with a single leader is state endorsement of a single religion. The shittiest version of that religion too.