I assume you’re saying the way they prevent misuse is because the ledger is public and it’s trackable by anyone who wants to look at the ledger.
If I’ve mistaken your argument then please correct me. I’m familiar with blockchain and have contributed to multiple projects in the open source community back when I saw potential and promise in blockchain tech.
If you’re depositing into a bank or exchange it’s not like 1 person is controlling that entire entities wallet(s). Deposits have the same risk of being misused in crypto as in fiat.
All the depositors have the extremely pressing NEED of not having all their deposits stolen from them.
Blockchains mathematically prevent fraudulent misuse of deposits.
People aren't mad about SBF taking a wrench to their head. They're mad about SBF defrauding them.
Could not have happened on a blockchain.