Saturn was not involved in God Valley according to Sengoku and yet people think he is comparable to Rocks crews or a Yonko when the bum was out there sneak attacking and killing children.
Garling was involved in the battle and he wasn't mentioned either.
The battle was off screened, so we don't know if Saturn actually fought with anyone.
But if it turns out that he did fight with someone and came out completely fine then that's really impressive.
Also there is this huge battle going on and Saturn isn't panicking and doesn't even care, to me that isn't a bum but someone who clearly doesn't give a fuck.
Don't downplay on Saturn yet until we see him in action.