>But actually, an ankle bracelet that reports your location and audio might actually be less invasive of your private conversations in today's world that reporting the contents of your phone.
Not at all. I have the choice to carry / use a phone.
Today you do. This may not be the case in the future.
We have no idea what the political and technical landscapes will look like in 5, 15, or 25 years. It is not inconceivable that your governmental identification "card" will morph from the plastic of today into an embedded device in the phones of tomorrow.
In an argument about a literal "backdoor" - an entry in every person's house - you could also argue that people choose to live in houses instead of under the stars.
Not at all. I have the choice to carry / use a phone.