It's pretty obvious that you should be backing up the actual TOTP secrets not relying on an app to manage it. I use 2FAS Auth which allows export. The other alternative is to use multiple devices for each 2FA account (the original intent?)
Actually atom was very efficient, but they tended to pair it with a horribly inefficient southbridge that would idle at many times the full CPU power draw (2-3W or more)
Good for training, definitely a bad idea for inference. But if you are spending that much money, why not just buy the equivalent of GPUs? You could buy 10 12GB 3060s for that price.
For those who don't want their iPhone participating in the Find My network, from my understanding, turning off iCloud disables the sharing of BLE advertisements.