re: Why bitcoin is worse than a Madoff-style Ponzi scheme

stealing from an exchange doesn’t mean the Bitcoin network had any vulnerability at all. It means the exchange had a security issue. Nobody has ever had their BTC stolen from a cold wallet that didn’t expose their recovery seed to bad actors. People that equate theft from an exchange to the network somehow having a security issue often have no idea what they are talking about.

And I’d add if SHA256 did have a vulnerability that could be exploited to defraud the network, you might want to check that your bank account is still secure because the SHA2 class of hash functions form the basis of much of how we ensure secure connections on the internet today.