I'm always bothered by the sense of entitlement. A warrant just says they're allowed to infringe someone's 4A rights in order to look for and seize evidence. It

I'm always bothered by the sense of entitlement. A warrant just says they're allowed to infringe someone's 4A rights in order to look for and seize evidence. It's not a promise that they'll find and be able to use whatever it is they're looking for. And I don't think the FBI has ever stated that they dropped or lost a case due to crypto.