The entrance of the faith of the hidden god into open society didn't come with the normal unpleasant reaction expected towards a new church. The world war and the Celestial Supreme's lax attitude to the chaos in the mortal realm allowed the cult of life to fester within the society of giants of order. His hands-off approach these past few years let the cult grow stronger under his nose without him realizing it.
A lot of giants of Order bear grudges and resentment against gods. The gods have been using them for their games and entertainment for ages. The numerous divine wars have led to a lot of bloodshed. The recent world war did a lot of damage to the prestige of gods just as it damaged the resources of the mortal realm.