You would because the device would have restarted.

So obviously the only way to avoid this is to give total control to Apple and Apple alone?

Not, say, disable flashing if the passcode protected lock screen is up?

I had a much more snarky answer before this one about how realistic this scenario is for most people, but I will keep it to myself.

I'd rather suffer the possibility of being pwnt than have devices that come pwnt out of the box. Manufacturers could develop systems that removed themselves from the trust chain, but unfortunately more control is beneficial in their view.