This was kind of triggered by The Beggar's claims, made in the following topic:

https://efupw.com/efu1-forum/topic/32/32374/aoist-cult-prelude/index.html?amp;start=15

The Beggar claims that there are no Ao worshippers and that this is claimed in sourcebooks - this is not true, it is not said that all Aoist ministers -HAVE- disappeared, but are gradually disappearing.

Nevertheless, as I am quite comfortable with the ruling to disallow Aoists on EfU, it should be noted that, as far as I know, the deity setup placeable in the starting area sees Ao as a valid deity. This would, provided the above, be an error.