They can be claiming to speak with the authority of tom cruise for all I care.
They only accept that authority blind and without question if they are mindless sheep. Which the vast majority of parishionors ar not, nor are they stupid, or blind at all, the vast majiority of them in that country make a conscious decision. Most adherants of any given faith are not zealots.
Last time I checked, the rank of vicar isnt even close to the top of the church hierarchy anyway now is it.
The authority of god position is severaly lacking any real wieght as an argument against religion in the 21st century, in a country with freedom of religion and free speach, back during the reformation mabey, but now days, its mayo in the wind.
But that doesnt matter if your against both free speach and freedom of religion, which the two imho are really one and the same.