Wasn't half of the concern with the arrest of Ross Ulbricht figuring when they could get him with his computer unlocked, without time to lock/wipe it? They'd have a pretty hard time proving destruction of evidence if 1. they didn't know for sure evidence was on that specific computer and 2. it was destroyed rather than just that the decryption key was removed from memory.

Regardless, the government violating an individual's rights doesn't mean we should yell at uber, it means we should yell at the government.