Re: Well you cannot make this secure
"There is a thing called Focussed Ion Beam microscope"
You expect them to attach 30+ wires somewhere in the middle of a billion+ transistor chip running at hundreds of megahertz, without effecting timings or state? You also expect the metal layers in the Enclave area to make that easy (there are typically 6 plus layers in a modern chip)
I think you overestimate the capabilities of these folks, especially given that YouTube video targeted a PIC32, which is fabbed on a 250 or 130nm process, more than an order of magnitude larger than the latest silicon processes.