Replacing the firmware (Secure Enclave or not) with a version that doesn't include rate-limits and auto-wipe isn't the same as having a crypto backdoor. Right n

Replacing the firmware (Secure Enclave or not) with a version that doesn't include rate-limits and auto-wipe isn't the same as having a crypto backdoor. Right now, your data is still protected by the complexity of your passphrase. This is not true for your scenario.