Terran is very religiously neutral and long ago it became somewhat custom to adopt a "to each is own" policy regarding religion; it is very seldom discussed in public and the only times SA is every brought up is in connection to outside forces such as Kabrinskia or Astrum.
Honestly, I'm fairly certain that Labell's rather significant position within SA is mostly unknown to a good portion of Terran. First because of what I mentioned above and 2) because Labell is actually a very quiet guy who very seldom involves himself in realm discussions unless it us of very big political importance. Other than that, you don't hear from him. Vigilans even more quiet.