Whether the behaviour is arrogance or carelessness, internal consistency is not Caribdis's strength as a writer. He's an excellent writers of "situations" and leans into that, which is why Eternum feels like a sitcom. This leads to a lot of inconsistencies in the narrative so he can get the most bang out of the scenarios he dreams up.
As such, I wouldn't put too much stock into Orion's motivations for behaving so riskily. Caribdis serves the scenario, not the plausibility.
Obviously, I would like him to have both, but honestly, Eternum is best played without thinking too much. It's wonderful in so many ways, but there is no doubt that it is best to play with the brain switched firmly off.
