If they had no idea about these extraordinary powers appearing in real-world modern speculative works, that would be one thing, because reality and imagination are always different.
However, as it happens, these extraordinary powers from speculative works have actually appeared, and they follow the works' settings one hundred percent.
This forces them to think further: since extraordinary powers from speculative works like chakra and the Warp have appeared, and they strictly follow the settings of those works, then by what right shouldn't you mythological figures follow your settings one hundred percent?
Chapter 169