Well done. A few things to add, IF you want to ensure this new phone is extremely DIFFICULT (not impossible) to connect to you. 1- Make sure the privacy phone’s battery is COMPLETELY REMOVED and in a faraday container (some phones have a secondary internal battery) ANY TIME it’s within 10-ish miles of your regular phone, your home, your work, your friend’s/relative’s homes, or your friend’s/relative’s phones. 2- Never Ever call or text your home, family, friends, work, or relatives from this privacy phone (unless it’s an emergency). 3- NEVER EVER pay for anything with a credit card or check, when this privacy phone is with you and turned on. - Extra points for wearing a baseball cap and Covid mask if you go into a store with your privacy phone (to buy something in cash).
So you make a stronger digital fingerprint for you, as you use obscure tech. It wil lit every alarm on network hardware delivering the data. E2e encryption and other steps may keep your privacy, but all the metadata will be collected and the data may be collected. And the data will be stored extended time vs. US nationals as your data is not identiefied to be from an US national. Even Protonmail has its issues. Basically - this is not a good solution to the problem you have.
but if that phone ID isn't connected to anything personally about me, what difference does it make? Privacy is either hiding WHO you are, or WHAT you are doing but very rarely both.
