Is there religion in this world?
Yes, of course there is.  However, unlike many fantasy worlds where there are players who are Clerics and Oracles who regularly cause miracles to occur through prayers to the various gods, this world can - at times - feel vaguely secular. This is NOT because the people are less faithful or that there isn't some form of worship regularly taking place.

The administrative worship of the various churches where in some nations may hold to a pagan ideal where there is no obvious deity which hold sway. There are other regional places of worship will venerate a single god as a chieftain over a family of lesser gods or a dualist pair over 'lesser angels'. It happens that the most powerful church in the land promotes the idea that no one god among its pantheon is paramount over the other gods within its scope.

But beyond the mundane details between the guidance of the congregation. This is a world where what might be called the proofs of religion are self-evident, all of the time.  No one disbelieves in the existence of the Divine; they are there. They are far more concrete and present in everyday life than in our Modern Lives. If you enter a Prime city and follow the signs - you can find the fruit of the Lokahi, trapped in a Bastion of Law. Artistic iconography of a mighty tree with a complex branch and root system is a common motif under the Imperial Arch.  Its found on the sides of buildings in all of the Prime cities - though different in cultural representation.

Thus, many of the rituals and other trappings of organized religion are unnecessary in Arkos. Just because we don't see worship going on very often doesn't mean it's not being done. Scratch any individual and you'll find an actively faithful person 9 times out of 10. There just isn't the need to formalize worship except on occasions which, by their nature, are already formal (i.e. funerals, weddings, harvest, etc). There is little necessity for the trappings of religion which, by and large, are designed reinforce us in our faith. And, where necessary, to convince others of the superiority of a SPECIFIC faith.

If your beliefs are made concrete and manifest around you at any given time there is little the need to consistently represent it.