No, I have no splitting hairs, but thanks for your concern. The word 'replacement' carries an implication of substitution, sure, but 'substitute' does not imply replacement. In the case of a vicar, s/he is a de facto stand-in for a god, a figurehead for the devotion of the faithful - not a replacement for a god.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'