Everyone knew how LUNA worked. nothing opaque about its mechanisms. Literally check the chain.
Smart money and retail both hit. Jump, 3AC, VCs, and small investors alike wiped out all the same from the same flawed idea.
A transparently bad idea is not a crime, even if no one sees how bad of an idea it is and some people end up offing themselves because of it.
They either knew the risks, or didn't understand the asset.