Ah, so Apple's encryption does actually work.
That's the essence of the good encryption: everything is known, except the key. You are not supposed to have it. FBI, hopefully, isn't supposed to have it too. That's why we have laws. Checks and balances and stuff. Laws made for specific cases, not "we can do anything."
Which is very bad if it is accepted this time.
The FBI wants Apple to create "malicious" code/update/software version that would allow for multiple decryption attempts among other things. Apple CAN comply with these requests, probably easily. However, by doing so they will destroy trust in Apple signed code and set a precedent.
It doesn't matter WHO has the key because Apple will be acting in proxy.
The issue here is if All Writs is a good legal basis for the precedent of "change your product."
I agree with you about All Writs, I don't see any precedent for "change your product". Thanks for pointing my mistake out.