Switch to GrapheneOS as daily driver. Stripped-back iPhone for legacy fiat/banking guff.

You can use your fiat/banking on your GrapheneOS, no need to keep your old iPhone.

Partitioning Macbook to run Fedora Asahi - gradually move across work before going all-in.

This is the way.

Wiped MacOS from Mac Mini to run as a secondary node.

Why do you need a secondary node?

Consider a non-Apple desktop as daily driver by 2025

This seems nice: https://starlabs.systems/