You're clearly misunderstanding what bitcoin is about. No trust is put into crypto exchanges. Trust is put into cryptography, which miners help with. This kind of puts the trust in miners, but in order to do anything as a miner, you'd need to either break sha256, or you'd need 51% of the computing power. The latter is more likely, but it would make bitcoin useless because people will lose trust in the system, thus anything you'd do with the money you'd steal/double spend would be worthless.

On the other hand, individuals can still put their trust in crypto exchanges, but unlike the old system, you are not required to put your trust in an exchange.