#postmarketos's documentation seems to be really good https://wiki.postmarketos.org/wiki/Installation_guide
I am very pleasantly surprised.
Wow! Just... wow:
[20:01:44] This device has proprietary components, which trade some of your freedom with making more peripherals work.
[20:01:44] We would like to offer full functionality without hurting your freedom, but this is currently not possible for your device.
[20:01:44] device-fairphone-fp2-nonfree-firmware: WCNSS firmware (WiFi, Bluetooth, FM)
I think #postmarketos is flirting with me.
Ooooohhhhhhh PostmarketOS supports #i3wm!! I love i3 & I've been using it for years.