Why did Paradox not add Atharism to the game? (A school of thought with in sunni islam that rejected innovation and was very orthodox)

Its so weird that the abbasids are following asharism despite the fact that they never followed asharism... The Abbasid caliph's father in 866 was against mutazilites and other school of thoughts and became athari. Like ck3 tf is wrong with you, Maturidism and Asharism in 866 are you crazy? The founders of those two school of thoughts were just children or babies at the time of 866.... I demand an answer from the devs... Either they like innovation and reject the ahlul hadith or they are braindead...