No criminal fraud prosecution happens that quickly, and the "friends" are only friends when there's millions of donations to throw around. None of the politicians SBF and his co-CEO were purchasing will be returning their calls today.
Going bankrupt is not a crime in itself (ask any former president, one has experience and the other is a lawyer)). Yes, there is a lot that looks kinda criminal, but it will take a bit more than a week to put together a criminal prosecution.
Hopefully it is just a matter of them still trying to figure out the depth and nature of the crimes.
What specific crime are you accusing him of?
He stole user funds to use in his investment company. He even built a backdoor in the accounting system to move the money without setting off alerts with the security send audit team.
"I'm surprised you didn't hit any trees running through that forest with your eyes closed."
"Which specific tree do you think I should have hit?"